Search results

Create the page "Very Difficult" on this wiki! See also the search results found.

• Hymenochirus boettgeri
  :Some people keep DAFs with [[Betta splendens]]. This is difficult, as Bettas are also [[carnivore]]s, so they compete for the same types of f ...orm]]s are often suggested to owners as a DAFs main food source. This is a very bad idea for a DAF, as this food source is low in protein, and lacks many e
  17 KB (2,752 words) - 20:42, 14 February 2024
• GloFish
  ...ales also have a brighter gold tone to their metallic stripes, but this is difficult to discern without direct comparison to male fish. .../glofish.com/license.html Glofish Official Licence]</ref> It is made more difficult by hyperbaric treatment of the young to render them sterile.
  6 KB (983 words) - 12:15, 8 June 2020
• Pterophyllum scalare
  :Extremely difficult. Look for a slight [[nuchal hump]] on mature males, although it's not alway ..., this can be largely prevented by adding small fish when the Angelfish is very young. It then doesn't regard these fish as food. It also appears to lessen
  9 KB (1,385 words) - 09:54, 12 January 2020
• The Salt of the Earth
  ...m arose historically because water with higher levels of Ca and Mg is more difficult to use for washing clothes – it is harder to produce lather from soap (or ...ly hard to hard, and alkaline, is going to be improved by increasing those very things in which our water differs most from the natural waters of these fis
  13 KB (2,290 words) - 05:09, 14 February 2011
• Caridina multidentata
  ...as well as special feeding. Breeding of this species is considered fairly difficult as the zoeas need to be gradually introduced to salt water and then back to
  9 KB (1,370 words) - 15:27, 11 November 2023
• Zebrasoma flavescens
  :It is difficult to visually sex this fish.
  2 KB (347 words) - 01:58, 13 December 2017
• Fish Profile
  ...er(JAW)/Very Easy(VE)/Easy(E)/Moderate(M)/Challenging(C)/Difficult(D)/Very Difficult(VD) |availability = Very Common(VC)/Common(C)/Uncommon(U)/Rare(R)
  2 KB (296 words) - 13:04, 8 August 2011
• Plant Profile
  :How difficult is the care of this plant? (easy/moderate/hard/very hard) |difficulty = Easy/moderate/hard/very hard
  3 KB (461 words) - 04:28, 14 February 2011
• Pomacea bridgesii
  :Difficult, these are NOT hermaphroditic snails. Female grows faster than the male at
  5 KB (828 words) - 11:22, 9 January 2021
• Coral Profile
  :How difficult is it to keep this animal (Easy/moderate/hard/very hard) |difficulty = Easy/Moderate/Hard/Very Hard
  2 KB (301 words) - 02:11, 14 February 2011
• Gymnocorymbus ternetzi
  ...ank should be mature and well filtered but without too much current. Avoid very bright lights. ...tly translucent. Long-fin varieties of both colours have been bred but are difficult to keep as they will fin-nip amongst themselves.
  7 KB (1,023 words) - 16:57, 20 November 2023
• Beaufortia kweichowensis
  :Very difficult to sex, during breeding it is possible that males have more vivid colourati ...om river tank article] before considering this fish (See link below). Has very slow growth rate in captivity.
  4 KB (602 words) - 02:08, 26 October 2023
• Otocinclus macrospilus
  :Difficult. Females are slightly bigger than males. :Ensure that you look at their bellies carefully in the shop and if they look very thin or hollow bellied then tell the shop to feed them more [[algae tablets
  4 KB (634 words) - 09:35, 11 July 2021
• Pogostemon stellatus
  |difficulty = difficult
  899 bytes (96 words) - 16:21, 7 June 2020
• Breeding Mikrogeophagus ramirezi
  There is the traditional food recommended [[infusoria]], but this is "difficult" to produce and with the uncertain concentration. ...e placed into a small container. A few drops of water is then added. The very small utensils can then be used to make a mash. Once it is smooth, then ad
  4 KB (729 words) - 12:54, 14 February 2018
• Osteoglossum bicirrhosum
  :Very difficult to sex visually. Mature females are generally more rounded in the body and ...incubate them. Fry will live out of the fathers mouth for the beginning, very similar to what is found in mouthbrooding cichlids. Fry are generally cons
  7 KB (1,093 words) - 00:05, 26 October 2023
• Yasuhikotakia sidthimunki
  :Mature females will be broader in the mid-section and longer, otherwise difficult to sex. An egg scatterer, but breeding is unknown in captivity. Though arti :A generally peaceful community fish but it's very high activity levels may bother more docile or shy fish, especially those t
  3 KB (540 words) - 02:22, 13 December 2017
• Carassius auratus
  ...ood tankmates for Goldfish as Plecos are not only tropical fish but have a difficult time getting enough to eat and, given they are nocturnal, they may also lat ...t older. Constipation is a real concern with these type of goldfish. So be very careful that you don't over feed this fish. Never give it more than it can
  14 KB (2,151 words) - 22:43, 16 January 2021
• Freshwater algae
  ...ant leaves as well as on the edges of almost any hard surface. Composed of very fine strands it grows in dense patches resembling a dirty green beard, thus :Appearance: Actually bacteria ([[cyanobacteria]]). Grows very rapidly in blue-green, slimy goo-like sheets. This algae spreads over virtu
  10 KB (1,740 words) - 23:31, 6 February 2012
• Kryptopterus bicirrhis
  :These fish are difficult to sex, however, females are a little plumper when mature. :Passive and can be shy and very accepting of their own species. This is a tight schooling fish and needs th
  3 KB (398 words) - 02:23, 13 December 2017
• Fungus
  ...'herbal' or [[w:Tea tree oil|tea-tree oil]] remedies as these are at best very weak in action. There is another disease which looks very similar to 'Cotton Mouth disease and this is actually a serious bacteria in
  6 KB (940 words) - 22:22, 27 November 2013
• Constipation
  ...on of the digestive system where an animal experiences hard feces that are difficult to eliminate; it may be extremely painful, and in severe cases lead to symp ...o suffer from this as in the wild they feed mainly on insects and so it is difficult to feed them the correct amnount of fibre in their diet.
  1 KB (197 words) - 05:04, 24 February 2011
• Caridina gracilirostris
  ...as well as special feeding. Breeding of this species is considered fairly difficult.
  3 KB (465 words) - 18:20, 2 September 2020
• Synchiropus splendidus
  :Their diet can be their downfall in captivity, they're known to be very fussy eaters, primarily feeding on copepods and amphipods. Some may take fr ...duals starve in captivity. This is the main reason why it is rated as very difficult. While commonly found in LFS's, and not particularly expensive, most indivi
  6 KB (876 words) - 18:48, 17 June 2020
• Sphaerichthys vaillanti
  |difficulty=Difficult
  3 KB (462 words) - 17:02, 13 November 2019
• Virual diseases
  ...achinery of a host cell to reproduce and also reside within them, they are difficult to eliminate without killing the host cell. This is why it is very rare for chemical treatments to be used to treat viruses as to kill the vir
  3 KB (411 words) - 19:56, 23 October 2011
• Velvet
  ...und scratching at things in the tank very rapidly and usually has its fins very close to its body. Seeing Velvet on a fish is very difficult. One tip is to darken the room and tank lights. Shine a flashlight or torch
  3 KB (543 words) - 06:54, 24 February 2011
• Gymnarchus niloticus
  |difficulty=Very Difficult :Impossible to sex, and only able to breed in very large aquaria of at least {{gal|1000}}. They are mouthbrooders, the male ca
  3 KB (403 words) - 21:01, 26 May 2021
• Barbus ablabes
  :Difficult to visually sex, mature females may be slightly plumper in the belly than m
  2 KB (321 words) - 02:23, 13 December 2017
• Steatocranus casuarius
  :Members of this genus are difficult to confuse with any other cichlids. The buffalo head cichlids are robust, e
  3 KB (512 words) - 02:23, 13 December 2017
• Alestes humilis
  :Difficult to sex, females may appear fuller in the belly than males.
  2 KB (245 words) - 02:23, 13 December 2017
• Pareutropius buffei
  ...of the tank. A long tank is best for this fish and they do not appreciate very bright lighting so floating plants are desirable. ...d caudal fin which can be mistaken for ''[[Pareutropius debauwi]]'', it is difficult to tell these fish apart when juvenile. It has three bold lateral body stri
  2 KB (368 words) - 01:15, 19 February 2020
• Xenomystus nigri
  :These fish are difficult to visually sex. It's said that females have more colour when in spawning c
  2 KB (362 words) - 02:23, 13 December 2017
• Hepsetus odoe
  :It is difficult to get this fish to accept anything other than live food and care should be ...wim past, when it will zip out with lightening speed and grab the prey, it very rarely misses its target!
  3 KB (391 words) - 02:23, 13 December 2017
• Hydrocynus goliath
  :Difficult to sex, females may be broader in the belly than males. :Due to its large size and predatory nature, this fish is best kept in a very large species tank, can be kept with its own kind if introduced to the envi
  2 KB (358 words) - 02:23, 13 December 2017
• Epalzeorhynchos bicolor
  :A difficult fish to visually sex. Females are usually larger. Females have a grey stoma
  4 KB (592 words) - 12:17, 9 June 2020
• Atractosteus spatula
  : It is difficult to visually sex Alligator Gars. ...these remarkably alligator-like teeth which gives it its name. They have a very long body with a pointed snout, their fins are rounded and paddle-like.
  5 KB (719 words) - 05:21, 10 July 2021
• Pterophyllum altum
  :Extremely difficult. Look for a slight Cichlid hump on the male, although it's not always accur :Although the Altum isn't a long fish it is very tall with dramatically elongate fins, in fact the Altum can be twice as tal
  3 KB (510 words) - 07:23, 10 January 2020
• Synodontis angelicus
  :Difficult without observing the underside of the fish out of the water. Males tend to
  3 KB (455 words) - 19:48, 26 September 2018
• Toxotes jaculatrix
  :Difficult to visually sex.
  2 KB (305 words) - 23:15, 13 February 2018
• Scleropages formosus
  ...e females tend to be plumper than males. Are bred in captivity but only in very large ponds and in controlled conditions. ...mportant than depth, the Arowana must have room to turn around as it's not very flexible! A secure lid is a must as the Arowana is purely top-dwelling and
  3 KB (493 words) - 02:24, 13 December 2017
• Periophthalmus barbarus
  :Needs very specific environmental conditions. A raised area of land (sandy beach, pile ...e correct environment is provided, this should be a regular occurrence. Is very territorial towards it's own species and other creatures entering it's surr
  2 KB (325 words) - 22:24, 13 February 2018
• Neoceratodus forsteri
  :It is very difficult to visually sex these fish. :These are very large unpredictable fish best kept alone in a species tank. They are capabl
  3 KB (476 words) - 02:24, 13 December 2017
• Microctenopoma fasciolatum
  ...gle female and will most likely require culling unless the rearing tank is very large. ...ghly uncommon species that is not consistently available. Not particularly difficult to keep or breed if it can be acquired, though.
  4 KB (652 words) - 14:33, 28 November 2020
• Creagrutus beni
  :Difficult to sex, females may appear fuller in the belly than males.
  2 KB (284 words) - 02:42, 13 December 2017
• Brycinus macrolepidotus
  :Difficult to sex, colours on males may be more vibrant than females.
  2 KB (344 words) - 02:42, 13 December 2017
• Ictalurus melas
  :Difficult to sex. Females are broader during spawning season which is mid-spring. ...y catfish, has spines on it's fins that can inflict a painful sting, so be very wary putting your hands near this fish. The pectoral spines, however, can
  3 KB (428 words) - 02:43, 13 December 2017
• Potamotrygon leopoldi
  ...ze. The tank should be very well filtered and mature. Any décor should be very secure to avoid being toppled, and should not get in the way of the Ray. ...of Ray has been banned from export from their native Brazil, they're also difficult to breed in captivity. The price of these to buy is extortionately high and
  3 KB (436 words) - 02:43, 13 December 2017
• Paracyprichromis nigripinnis
  :Difficult when young, mature males are more intensely coloured. ...imum aquarium. Like most Tanganyikan cichlids, do not take excess nitrates very well, so tanks should have two 25% water changes weekly: they also do not l
  3 KB (375 words) - 18:36, 21 December 2023
• Labeo chrysophekadion
  :Difficult to visually determine the sex. There are no records of this fish being bred :Needs a very large and spacious tank with some hiding places and room to roam without ge
  3 KB (442 words) - 00:08, 12 January 2021
• Carnegiella marthae
  ...entifiable during spawning when eggs can be seen in the females body. Very difficult to breed in captivity, most specimens found will be wild caught. :A very distinctive looking fish. A convex body with "wing" like pectoral fins. The
  2 KB (294 words) - 02:43, 13 December 2017
• Aphyocharax anisitsi
  :Difficult to sex, females may appear fully in the belly.
  2 KB (278 words) - 02:43, 13 December 2017
• Cyrtocara moorii
  ...umphead' common name. Both males and females have nuchal hump so sexing is difficult. Keep at a young age with one male to three females and they will eventuall
  3 KB (483 words) - 02:43, 13 December 2017
• Hyphessobrycon peruvianus
  :Difficult to sex, females may appear fuller in the belly.
  2 KB (284 words) - 02:44, 13 December 2017
• Tropheus moorii
  |difficulty=Difficult :Monomorphic fish that are difficult to sex unless the female is holding (they are maternal mouthbrooders). Howe
  5 KB (772 words) - 02:44, 13 December 2017
• Butis butis
  :It is difficult to visually sex this fish.
  2 KB (334 words) - 12:02, 8 June 2020
• Apistogramma borellii
  ...han many of its congeners, is relatively peaceful, and is not particularly difficult to spawn. However, they still require good water quality.
  4 KB (595 words) - 17:14, 14 November 2019
• Tropheus brichardi
  :These fish are very difficult to sex with no differences colour or size wise. If you are able to see the
  2 KB (327 words) - 02:44, 13 December 2017
• Synodontis brichardi
  :Difficult to sex visually and there are no known reports of this fish being bred in c
  2 KB (314 words) - 02:44, 13 December 2017
• Pseudosphromenus dayi
  :Difficult to sex visually, males have more pointed and elongated dorsal, anal and cau
  2 KB (290 words) - 02:44, 13 December 2017
• Salmo trutta
  :This fish can be very territorial towards other trout, especially males of its own species. This :A large gamefish that is difficult to keep in captivity, best left to private lakes/rivers and the wild. Juven
  4 KB (585 words) - 02:44, 13 December 2017
• Notesthes robusta
  :It's very difficult to visually sex this fish.
  3 KB (370 words) - 02:45, 13 December 2017
• Brachygobius xanthozonus
  :Very difficult to sex visually and challenging to breed in captivity.
  3 KB (411 words) - 02:45, 13 December 2017
• Selenotoca multifasciata
  :These fish are very difficult to visually sex with no obvious external differences. :Keep in brackish water; as very young fish they can be kept in hard, alkaline freshwater, but as they grow
  2 KB (351 words) - 02:45, 13 December 2017
• Calophysus macropterus
  :Difficult to sex visually. The males are usually somewhat slimmer then the females. N
  3 KB (372 words) - 02:45, 13 December 2017
• Sphaerichthys osphromenoides
  ...h. Males have a straight throatline, which is rounded in females. They are difficult to breed in captivity.
  3 KB (408 words) - 02:45, 13 December 2017
• Leptobarbus hoevenii
  :This fish is difficult to sex visually and is not known to breed in captivity.
  2 KB (260 words) - 02:45, 13 December 2017
• Rhinodoras dorbignyi
  :It's very difficult to visually sex this fish. ...h or fry. Keep with similar sized peaceful fish, do not keep with anything very active nor with anything that may nip or bully this catfish. Will co-habit
  2 KB (366 words) - 02:46, 13 December 2017
• Chitala chitala
  :It is difficult to visually sex this fish. However, they have been bred in captivity, but m ...pt with smaller fish, can only be kept with similar sized robust fish in a very large tank. It can only be kept with other Clown Knife's in groups of 3 or
  3 KB (470 words) - 02:46, 13 December 2017
• Betta coccina
  ...grow, because of this the water is tea-coloured and the pH of the water is very low. These ponds are also cooler in temperature than what you'd find wild ' :Can be kept in male/female groups. They're difficult to breed as they pair up, if they don't like their partner, nothing will ha
  2 KB (363 words) - 02:46, 13 December 2017
• Altolamprologus compressiceps
  :Difficult, but mature males tend to be considerably larger than females when mature a ...means that they can also be kept in many other rift lake setups, although very aggressive fish should be avoided. However, they are extremely skilled fry
  5 KB (841 words) - 17:01, 21 December 2023
• Barbus eutaenia
  :Difficult to visually sex, mature females may be fuller in the belly.
  2 KB (336 words) - 02:47, 13 December 2017
• Pimelodus blochii
  :Difficult to sex.
  1 KB (149 words) - 02:47, 13 December 2017
• Trichopsis pumila
  :It is difficult to sex these fish visually. Mature females may be slightly fuller in the be
  2 KB (305 words) - 02:47, 13 December 2017
• Heterandria formosa
  |difficulty=Very easy ...nge spot on their dorsal fin. Their small size and coloring make them very difficult to confuse with any other livebearer, and the presence of a gonopodium in m
  4 KB (719 words) - 22:25, 14 November 2019
• Nannostomus marginatus
  ...immer and may show more red in their fins than the females. These fish are difficult to breed in captivity. ...ank with good filtration, but not a strong current. They do not appreciate very bright lighting so floating plants are desirable.
  2 KB (350 words) - 02:47, 13 December 2017
• Lefua costata
  :Difficult to sex visually. :A very elongated fish with a bold black lateral line from nose to caudal fin on a
  2 KB (256 words) - 02:47, 13 December 2017
• Hypseleotris compressa
  :Again, not a difficult species to accommodate assuming the tank is large enough. This species is t ...ually everything else about this species, reproducing these fishes is very difficult; while they spawn readily enough, the eggs are extremely small - about 320
  3 KB (510 words) - 18:16, 14 November 2019
• Myxocyprinus asiaticus
  :Difficult to sex and not known to spawn in captivity due to them rarely reaching matu :A temperate fish rather than tropical, this fish requires very large housing due to it's final adult size, combined with a good current an
  3 KB (471 words) - 02:47, 13 December 2017
• Protopterus aethiopicus aethiopicus
  :Difficult to visually sex. ...d in the wild during dry season. This is a very large fish that requires a very large tank with ample room to turn around. A soft substrate is ideal with [
  2 KB (381 words) - 02:47, 13 December 2017
• Elassoma evergladei
  ...nd courting females with a distinctive 'dance'; subdominant males are very difficult to distinguish from subadult females, though adult females are far plumper ...housed with anything larger than themselves. Best kept in a species tank; very small fish like least killifish can be mixed with pygmy sunfish, but neithe
  4 KB (704 words) - 23:39, 22 November 2019
• Neolamprologus brichardi
  :Difficult to visually sex. Dorsal and anal fins appear slightly longer on males. Male :This fish looks very un-Cichlid like and quite stunning. It has a pale base colour with a black
  2 KB (321 words) - 02:48, 13 December 2017
• Mesonauta festivus
  :These fish are quite difficult to visually sex. The pectoral and anal fins of mature males will be slightl
  3 KB (478 words) - 02:48, 13 December 2017
• Dichotomyctere ocellatus
  :Very difficult to sex visually. :These are very messy fish so their tank should be mature, well filtered and spacious.
  3 KB (425 words) - 18:42, 16 December 2017
• Mastacembelus erythrotaenia
  :Mature females are plumper than males, quite difficult to sex however.
  2 KB (346 words) - 02:13, 26 October 2023
• Neritina natalensis sp
  ...ults can call brackish, and marine setups home. The eggs harden and can be difficult to remove.
  4 KB (528 words) - 11:27, 9 January 2021
• Neolamprologus furcifer
  :Males have more vibrant colouration. Difficult to breed in captivity. ...e male per tank, unless the tank is very large. They do pair bond, but not very strongly.
  2 KB (309 words) - 02:48, 13 December 2017
• I got a Goldfish from a fair...
  ..., giving animals away as prizes would be outlawed BUT this is still a very very common occurance. ...ncocted. Keeping your Goldfish in a small unfiltered bowl will lead to its very early death and there is no way to keep them healthy in such a container.
  4 KB (665 words) - 15:56, 30 August 2013
• Ctenolucius hujeta
  :A carnivorous fish that may prove difficult to wean onto dead food. Does well on meaty foods such as earthworms and cri
  3 KB (445 words) - 02:48, 13 December 2017
• Echidna rhodochilus
  :Can be a difficult fish to feed. May only take live food such as shrimp and snails. Can be slo :Typical Moray in shape with a very elongate slender snake-like body with a large mouth. The body is brown/blac
  3 KB (434 words) - 02:48, 13 December 2017
• Hiodon alosoides
  |difficulty=Difficult
  950 bytes (126 words) - 03:33, 13 December 2017
• Nannostomus nitidus
  :Difficult to sex, mature females may appear more plump. ...ensely planted tank with some open swimming space. This fish does not like very bright light.
  2 KB (264 words) - 02:49, 13 December 2017
• Brachyplatystoma filamentosum
  :Difficult to visually sex. :A very large fish that should either be kept with similar sized fish (which, once
  2 KB (378 words) - 02:49, 13 December 2017
• Sinibotia robusta
  :Difficult to sex, and breeding is not known in captivity. Mature females may have a t
  2 KB (326 words) - 02:49, 13 December 2017
• Aequidens rivulatus
  ...and caring parents. They form a bond at a young age, mature fish are more difficult to bond. :A very attractive fish, with yellow/orange edging to the fins. It is an oval-shape
  4 KB (523 words) - 02:38, 26 October 2023
• Ageneiosus inermis
  ...on top. The mouth is large, wide, and has extremely short barbels that are difficult to find.
  1 KB (193 words) - 02:50, 13 December 2017
• Hampala macrolepidota
  :Sexing this fish is difficult. Mature females will appear fuller in the belly area.
  2 KB (290 words) - 02:50, 13 December 2017
• Abramites hypselonotus
  :These fish are difficult to sex visually, mature females may appear plumper. ...ally spacious well filtered tank with a secure lid. They do not appreciate very bright lights and need [[bogwood]] and rock hiding places.
  3 KB (401 words) - 02:50, 13 December 2017
• Chelmon mulleri
  :Can be difficult to feed. Should be offered a variety of foods including [[mysis shrimp]], v
  2 KB (251 words) - 03:41, 13 December 2017
• Lepidocephalus thermalis
  :It is difficult to visually sex this fish, although mature females may appear plumper than ...eaceful Loach that does best in large groups, at least 3 or more. They are very active and should not be kept with shy or territorial fish.
  2 KB (291 words) - 02:57, 13 December 2017
• Liosomadoras oncinus
  :Juveniles are difficult to sex, but mature males will have a modified anal fin as well as thicker d ...this fish are striking and lend well to it's common name in that they are very much similar to that of the Jaguar.
  2 KB (385 words) - 02:57, 13 December 2017
• Cleithracara maronii
  :Difficult to sex but males tend to be larger then females. ...outh, with some being more dominant and some being more submissive. When ''very'' frightened, will flatten itself against a piece of wood and turn brown. T
  3 KB (364 words) - 06:18, 5 January 2018
• Pseudochalceus kyburzi
  :Difficult to sex visually.
  2 KB (234 words) - 02:58, 13 December 2017
• Monocirrhus polyacanthus
  ...appear rounder in the belly during spawning season, but otherwise they are difficult to visually sex.
  3 KB (481 words) - 02:58, 13 December 2017
• Hypsibarbus wetmorei
  :Very difficult to visually sex. :A very active, large shoaling species.
  2 KB (296 words) - 02:58, 13 December 2017
• Pterophyllum leopoldi
  :Generally difficult as with all angels. When kept in a group two will pair off and when ready t ...y aggressive when breeding. Due to their small mouths even tetras (But not very small ones) are safe.
  3 KB (390 words) - 07:23, 10 January 2020
• Parosphromenus deissneri
  |difficulty=Difficult :Very picky carnivores that will not accept flake or pellet, and will only unreli
  3 KB (503 words) - 02:58, 13 December 2017
• Brycinus longipinnis
  :They are very peaceful schooling fish. They are, however, very aggressive eaters that may out compete more timid fish for food and have be ...material. In the aquarium they appreciate any food offered, and it is not difficult to entice them to eat. Frozen and live foods intensify their iridescent gre
  4 KB (531 words) - 02:59, 13 December 2017
• Neolamprologus multifasciatus
  : Difficult, but mature males are larger than females. Females are less than 3 cm in to ...pect them to get along with other shell dweller species unless the tank is very large. One could venture to keep these in a 30 gallon tank with some julido
  4 KB (566 words) - 21:09, 15 August 2023
• Amphilophus citrinellus
  :Mature males exhibit a large distinctive [[nuchal hump]], juveniles will be difficult to sex. ...sive with themselves and other species and tank mates should be considered very carefully. If brought up with robust tank mates, they can work with other l
  3 KB (466 words) - 17:16, 7 June 2018
• Nandus nandus
  :Difficult, males may have darker colouring and larger fins.
  1 KB (218 words) - 03:00, 13 December 2017
• Belonophago tinanti
  :Difficult to visually sex. :A long tank with ample open swimming space but without very bright lights. The lid should be secure with no holes as this fish may jump
  2 KB (269 words) - 03:00, 13 December 2017
• Xenentodon cancila
  ...ise Needle Nose Gars in captivity. Visually sexing these fish, however, is difficult. ...with a dark edged silver band running horizontally down its side. It has a very slender, long mouth lined with razor-sharp teeth.
  2 KB (347 words) - 03:00, 13 December 2017
• Tetraodon lineatus
  ...ll vertebrates. In captivity they may be trained to non-living foods, but very high "crunch" factors are still required to wear away the four dental plate ...s is an evolutionary development to rid the system of much indigestible or difficult to digest material up front, as it were. Unfortunately, flake is ground as
  11 KB (1,875 words) - 09:18, 20 January 2020
• Acanthocobitis urophthalmus
  :Mature females may be plumper than males, but these fish are difficult to sex.
  2 KB (347 words) - 03:00, 13 December 2017
• Dormitator latifrons
  :This fish is difficult to sex visually.
  2 KB (280 words) - 13:19, 27 September 2022
• Macropodus opercularis
  |difficulty=Very Easy ...s can look very similar to males and sexing these fish can be unexpectedly difficult.
  6 KB (913 words) - 16:38, 13 November 2019
• Cichla ocellaris
  :These fish are difficult to sex while young. As they mature, males will develop a [[nuchal hump]]. :This fish must be in very large aquaria only and prefers a water temperature between {{F|80|82}}. Pro
  3 KB (513 words) - 10:57, 19 June 2020
• Macrognathus aculeatus
  :Difficult to visually sex, mature females may appear plumper than males.
  3 KB (539 words) - 03:01, 13 December 2017
• Panaque nigrolineatus
  :Difficult to sex. It is possible that it is similar to other Ancistrus plecos, the ge
  3 KB (410 words) - 03:02, 13 December 2017
• Acanthorhodeus asmussi
  :It is difficult to visually sex this fish. Mature females may appear more full in the belly ...rge tanks which are well filtered and oxygenated. They will not do well in very warm temperatures.
  2 KB (250 words) - 03:02, 13 December 2017
• Misgurnus mohoity
  :These fish are difficult to sex. Mature females may appear plumper than males. :A very elongate fish with small rounded fins, the body is mottled brown-yellow in
  2 KB (297 words) - 03:02, 13 December 2017
• Brochis splendens
  :Female is larger and has large [[pelvic]] fins. Difficult to breed in captivity.
  3 KB (392 words) - 03:02, 13 December 2017
• Leiarius pictus
  :Difficult to sex visually, females are said to be more heavily set than more slender
  1 KB (156 words) - 03:02, 13 December 2017
• Sorubim lima
  :Very difficult to sex visually.
  3 KB (429 words) - 03:03, 13 December 2017
• Datnioides microlepis
  :Very difficult to sex visually. ...er groups can result in aggression issues. Tank mates should be considered very carefully, they should not be kept with aggressive fish nor with fish small
  2 KB (330 words) - 03:03, 13 December 2017
• Gasteropelecus sternicla
  :Difficult to visually sex, the female will become more broad in the belly when she is :Must be kept in a spacious tank with a very secure lid as these fish are known to jump.
  2 KB (319 words) - 03:03, 13 December 2017
• Hemiodopsis immaculatus
  :Difficult to visually sex. ...aceful, should be peaceful towards its own kind. Should not be housed with very timid fish as this fish's active nature may bother them.
  2 KB (258 words) - 03:03, 13 December 2017
• Semaprochilodus taeniurus
  :Very difficult to visually sex. :Does appreciate company of it's own kind if the tank is very large with plenty of lateral swimming space, but otherwise a single specime
  3 KB (378 words) - 03:03, 13 December 2017
• Hemiodus gracilis
  :Difficult, males tend to slimmer. No recorded instances of this fish being bred in ca
  2 KB (270 words) - 03:03, 13 December 2017
• Lamprologus speciosus
  :Very difficult to sex visually. Once the Alpha male has been established, sub dominant mal
  3 KB (454 words) - 14:23, 14 September 2022
• Acestrorhynchus falcatus
  :Difficult to sex, females may appear fuller in the belly. Can be bred in captivity pr
  2 KB (303 words) - 03:04, 13 December 2017
• Boulengerella maculata
  :It is very difficult to visually sex these fish. There are no known records of successful breedi ...will accept live fish, earthworms, insects and other meaty foods. Will be difficult to wean on to pellets or flake.
  2 KB (346 words) - 03:04, 13 December 2017
• Acipenser ruthenus
  :These fish are difficult to visually sex. ...also tolerate their own kind, but to keep several of these fish you need a very large pond.
  3 KB (492 words) - 03:04, 13 December 2017
• Eretmodus cyanostictus
  ...ds, such as tropheus. They are best kept in mated pairs unless the tank is very large, as conspecific aggression is extreme in this species: however, once ...oby. Unfortunately, distinguishing it from the other goby cichlids is very difficult.
  4 KB (538 words) - 03:04, 13 December 2017
• Parambassis wolffii
  :Difficult to visually sex. Gravid females may seem more full in the belly.
  2 KB (363 words) - 03:04, 13 December 2017
• Barbichthys laevis
  :This fish is very difficult to visually sex, mature females maybe more rounded in the belly. ...sh fry. Should not be kept with long-finned and slow-moving fish, nor with very aggressive fish.
  2 KB (348 words) - 03:05, 13 December 2017
• Hydrocynus vittatus
  :Difficult to sex visually. :A very elongate slender fish with large scales that are iridescent silver in colou
  2 KB (274 words) - 03:05, 13 December 2017
• Farlowella acus
  ...with short bristles. Sometimes difficult to tell and breeding in captivity very rare. :Has a shorter snout then ''[[Farlowella gracillis]]''. It is a very slender fish with a pointed snout that does well to resemble a long twig! I
  3 KB (389 words) - 13:10, 14 March 2018
• Alestes bimaculatus
  :Difficult to sex, females may appear fuller in the belly than males.
  2 KB (290 words) - 03:06, 13 December 2017
• Gobioides broussoneti
  :Very difficult to sex visually, however, males will become more territorial as they mature ...est with at least 10% to 50% marine strength salt in their water. They do very poorly in long-term freshwater habitats. They also require a cave or rock
  4 KB (523 words) - 03:06, 13 December 2017
• Lepomis gulosus
  ...a predatory fish and as a result has nutrient rich waste. This can lead to very dirty water if water changes are not performed on a regular basis and inade ...to hide in rocks and plants. False plants work fine if live plants are too difficult to keep.
  3 KB (456 words) - 02:15, 31 March 2018
• Blue Green Algae
  ...tosynthesis). It forms a blue-green slime that will cover everything in a very short time. If left to overrun the tank, cyanobacteria will kill plants and ...as possible prior to treatment should be recommended, since it is not that difficult.
  4 KB (752 words) - 09:27, 14 October 2011
• Melanoides tuberculata
  ...be touched by small Loaches or Puffers as their long conical shell is too difficult to get into.
  8 KB (1,300 words) - 11:24, 9 January 2021
• Water conditioners
  :[[Chloramine]] is more difficult to remove as [[sodium thiosulphate]] will break chloramine into its two com
  11 KB (1,751 words) - 14:14, 4 February 2018
• Common Pleco
  Due to the number of species in the genus, identification is very difficult without exact provenience of the specimen. Most ''common plecos'' are now e
  785 bytes (108 words) - 13:35, 31 March 2016
• Macrotocinclus affinis
  :Difficult. Females are slightly bigger than males. :Very pale body band with almost a golden sheen to it. See picture.
  3 KB (408 words) - 09:42, 11 July 2021
• Beginning Fishkeeping
  *Pitfall: You'll be very tempted to buy items like the tank and fish on the same day (especially if This is a difficult step. There are currently dozens of different tanks on the market. They are
  18 KB (3,295 words) - 20:12, 28 January 2024
• Beginning Fishkeeping-Introduction
  Having a successful tank is not difficult, nor is it necessarily a lot of work, provided you use some common sense. T ...come more susceptible to disease. Moreover, most fish medicines don't work very well, aren't worth the money, and frequently do more damage than good. Ofte
  9 KB (1,448 words) - 03:21, 16 December 2020
• Beginning Fishkeeping-Cycling Your Tank
  ...ar products) may cause ammonia test kits to give false readings, making it difficult to determine exactly when cycling has completed. See the TEST KIT SECTION f ...on't want to add them to an established tank. For someone setting up their very first tank, however, all fish will probably be purchased from the same stor
  10 KB (1,690 words) - 20:40, 24 July 2012
• Beginning Fishkeeping-Practical Freshwater Chemistry
  ...teristics to match the fish's needs, though doing so is almost always more difficult than first appears. In either case, you need to know enough about water che ...pH of the water is too high for your fish, the buffering capacity makes it difficult to lower the pH to a more appropriate value. Naive attempts to change the p
  16 KB (2,745 words) - 01:15, 14 February 2011
• Beginning Fishkeeping-Long-term Success
  ...ll aquarium animal life), beyond very short distances, is DON'T. Travel is very stressful on fish, and even with the best precautions you should expect to The main problem in moving the tank is the filtration system. After a very few hours (less than a day) without a flow of oxygen-laden water, aerobic b
  12 KB (2,192 words) - 03:23, 16 December 2020
• Filtration FAQ
  Sometimes we forget that fish kept in an aquarium are confined to a very small quantity of water as compared to their natural habitats in the wild. ...ndle, you do not need a physical filter. Unfortunately, you cannot support very many fish with only the natural biofiltration.
  30 KB (4,968 words) - 11:02, 10 November 2013
• Tapeworm
  Because the male and female organs develop at different rates, that's not a difficult feat. In many higher animals, usually a single tapeworm or just a few occup
  5 KB (758 words) - 05:05, 14 February 2011
• Wabi-kusa
  ..." which is a Japanese aesthetic sense based in simplicity (which is really difficult to express in english) and "Kusa" meaning "grass".
  884 bytes (139 words) - 05:19, 14 February 2011
• Ancistrus sp.
  ...ature. Adult males will be territorial against other males. If bought when very young then they will be more used to you and therefore more visible during ...minckii}}, other species are now available, though exact identification is difficult because so many are not yet fully described. For these reasons, they are mo
  7 KB (1,129 words) - 02:44, 26 October 2023
• Garra cambodgiensis
  :Difficult to visually sex, mature females may be fuller in the belly than more slende :This fish is often sold as the very popular [[Siamese algae eater]] or [[Flying fox]] by less knowledgeable aqu
  3 KB (472 words) - 03:07, 13 December 2017
• Nemateleotris decora
  :It is very difficult, if not impossible, to differentiate between the sexes of this Firefish.
  3 KB (441 words) - 03:08, 13 December 2017
• Pomacanthus imperator
  :It is difficult to visually sex these fish.
  3 KB (429 words) - 00:21, 26 October 2023
• Chelmon rostratus
  :These fish are difficult to sex visually. ...e with soft corals, anemones and small inverts. It should not be kept with very aggressive fish and may well not get along with other [[Butterflyfish]]. Ke
  3 KB (400 words) - 02:34, 26 October 2023
• Ecsenius stigmatura
  :It is very difficult to visually sex Tailspot Blennies.
  2 KB (301 words) - 03:08, 13 December 2017
• Serrasalmus elongatus
  :Difficult to visually sex and not known to spawn in captivity. ...sive fish, in a lone species tank only. Groups should only be attempted in very large tanks.
  1 KB (211 words) - 03:08, 13 December 2017
• Pygocentrus nattereri
  :It is difficult to sex this fish. However, females may appear more robust than males.
  3 KB (411 words) - 03:08, 13 December 2017
• Acanthurus achilles
  :Very difficult to visually sex this fish. :Difficult to keep in captivity. Prefers very large tanks with lots of swimming space. If it's environment and food is no
  3 KB (386 words) - 02:35, 17 June 2020
• Plotosus lineatus
  :It is very difficult to visually sex this fish. :When young this fish forms very large tight balls for protection, often with over 100 individuals. As it ma
  3 KB (424 words) - 03:09, 13 December 2017
• Geophagus steindachneri
  :Breeding is not difficult and ''Geophagus steindachneri'' is sexually mature from 2.8" (7 cm). ''Geop :Not difficult to keep, but are sensitive to water quality issues as with most Cichlids, r
  4 KB (624 words) - 03:09, 13 December 2017
• Alternanthera reineckii
  :Most Alternanthera species are difficult to grow, but this one is relatively undemanding. A source of iron will help
  2 KB (295 words) - 13:15, 7 June 2020
• Pseudochromis porphyreus
  :These fish can be difficult to feed when initially introduced to a tank, but can be encouraged to live/
  2 KB (293 words) - 03:09, 13 December 2017
• Aphyosemion abacinum
  |difficulty=Very Difficult
  812 bytes (111 words) - 03:32, 13 December 2017
• Pseudochromis fridmani
  :It is very difficult to visually sex this fish.
  2 KB (307 words) - 03:09, 13 December 2017
• Herichthys cyanoguttatus
  :It is difficult to sex these fish when juvenile. Older fish will be easier, with the female
  2 KB (232 words) - 03:09, 13 December 2017
• Otocinclus vittatus
  :These fish are difficult to visually sex. Mature females are slightly bigger than males.
  3 KB (453 words) - 19:26, 22 February 2019
• Perrunichthys perruno
  :Difficult to visually sex. Mature females may be thicker set in appearance than males ...ng that fits in its very large mouth. Best kept with similar-sized fish in very large aquaria, such as ''[[Oxydoras niger]]'' and large Characins or South
  2 KB (255 words) - 03:10, 13 December 2017
• Iriatherina werneri
  ...ins. These fish can be difficult to breed in captivity as the tiny fry are difficult to feed and keep alive. ...nbowfish, with an elongated pointed body, the dorsal, anal and caudal have very long extended rays, giving the fish it's common name. The body is coloured
  3 KB (372 words) - 03:10, 13 December 2017
• Lophiobagrus cyclurus
  :Difficult to visually sex.
  2 KB (274 words) - 03:10, 13 December 2017
• Axelrodia stigmatias
  :Difficult to sex, females will appear fuller in the belly than males. ...and in a densely planted tank with some open swimming space. Does not like very strong currents and needs hiding places.
  2 KB (298 words) - 03:10, 13 December 2017
• Chalceus macrolepidotus
  :Very difficult to sex visually.
  2 KB (343 words) - 03:10, 13 December 2017
• Laetacara dorsigera
  :Most difficult to distinguish from ''[[Laetacara curviceps]]'' especially when young - eve
  2 KB (298 words) - 03:10, 13 December 2017
• Centropyge bicolor
  ...male, if there are no males present, some will turn into males. It is very difficult, if impossible, to breed these Angelfish in captivity as fry are planktonic
  3 KB (380 words) - 00:36, 16 June 2020
• Esox americanus americanus
  ...n 1/3 of the pickerel's body length. Redfin Pickerel will not do well with very active or aggressive fish; such a combination often results in the Pickerel ..., but will eat other live foods such as grubs and insects. It is extremely difficult to achieve a diet of artificial food with Redfin Pickerel or Pikes altogeth
  2 KB (359 words) - 03:11, 13 December 2017
• Phenacogrammus major
  :Difficult to sex, males may have more vibrant colouration.
  2 KB (224 words) - 03:11, 13 December 2017
• Channa micropeltes
  :Difficult to visually sex. They are not sexually mature until they are at least {{in| ...hould have an exceptionally secure and heavy lid to prevent escapes and be very well filtered. Substrate should be gravel, not sand as it will be kicked up
  3 KB (415 words) - 03:11, 13 December 2017
• Euthanasia
  :Can be difficult to find. Vet prescription often required.
  4 KB (601 words) - 04:22, 2 December 2021
• Otocinclus cocama
  :Difficult to sex, mature females are slightly more plump in the belly than males. ...water quality problems, mature stable tanks are best. Does not appreciate very bright lights, will be active after dark.
  2 KB (320 words) - 03:11, 13 December 2017
• Holacanthus bermudensis
  |sexing=:Difficult to tell as juveniles. Male adults are somewhat larger then females.
  2 KB (340 words) - 22:44, 8 March 2018
• Holacanthus ciliaris
  :Difficult to tell as juveniles. Male adults are somewhat larger then females.
  2 KB (326 words) - 00:03, 26 October 2023
• Pomacanthus xanthometopon
  :It is very difficult to visually sex this fish and it is not bred in captivity.
  3 KB (382 words) - 00:07, 26 October 2023
• Acanthurus lineatus
  :It is difficult to visually sex these fish and they're not known to have been bred in capti
  3 KB (360 words) - 21:56, 17 June 2020
• Zebrasoma velifer
  :Difficult to impossible, males tend to be larger than females.
  2 KB (210 words) - 04:28, 18 June 2020
• Margarites pupillus
  :These snails are difficult to sex and are not known to breed in captivity. These are not hermaphroditi :A very peaceful snail which will concentrate its attentions on algae and not harm
  2 KB (332 words) - 14:31, 8 August 2011
• Centropyge acanthops
  :Difficult to visually sex.
  3 KB (349 words) - 03:11, 13 December 2017
• Echidna nebulosa
  :These eels are very difficult to sex visually. Captive breeding has not been reported. ...o keep with corals, anemones and sea urchins. They should not be kept with very small fish such as [[:Category:Damselfish|Damselfish]], but larger semi-agg
  3 KB (410 words) - 03:11, 13 December 2017
• Abramites eques
  :This fish is difficult to sex visually, mature females may be slightly plumper than males.
  2 KB (283 words) - 19:34, 27 December 2017
• Pomacea canaliculata
  :Similar to the method used for the Apple Snail species Pomacea bridgesii Difficult, these are NOT hermaphroditic snails. Female grows faster than the male at
  3 KB (499 words) - 00:13, 31 May 2017
• Neritina reclivata
  ...and the adults can make residence in brackish, and marine setups. Eggs are difficult to scrape off.
  3 KB (407 words) - 11:25, 9 January 2021
• Pterois volitans
  :It's very difficult to sex Lionfish, and breeding in captivity has so far been unsuccessful. :Difficult to feed. Will need lots of patience to get this fish to take frozen food. W
  4 KB (544 words) - 03:12, 13 December 2017
• Assessor flavissimus
  :These fish are difficult to sex visually.
  2 KB (316 words) - 03:12, 13 December 2017
• Taeniura lymma
  |diet = It is unfortunate that this species is considered difficult to keep simply because it refuses prepared diets. It seems they refuse to e
  2 KB (331 words) - 20:59, 13 November 2017
• Heterodontus portusjacksoni
  :Can be difficult to feed and may only take live food. After time may be weaned on to shellfi
  3 KB (472 words) - 17:56, 15 June 2020
• Cromileptes altivelis
  :It is very difficult to visually sex these fish and they are not known to be bred in captivity.
  3 KB (495 words) - 15:54, 6 September 2019
• Parauchenoglanis loennbergi
  :It is difficult to visually sex this fish, male may be larger than the female. Little is kn
  2 KB (214 words) - 03:12, 13 December 2017
• Difficulty
  '''Difficulty''' is a reference to how easy or difficult a fish is to keep. ==Difficult==
  2 KB (290 words) - 19:06, 29 June 2020
• Amblyeleotris randalli
  :These fish are difficult to visually sex. There are records of this fish spawning in captivity howev ...milar Gobies and others of its own species. To keep more than one you need very a spacious tank.
  2 KB (353 words) - 03:12, 13 December 2017
• Australoheros facetus
  :Sexing this fish is difficult, males are usually a little larger with slightly more elaborate finnage.
  2 KB (312 words) - 03:12, 13 December 2017
• Acnodon normani
  :Difficult to visually sex.
  2 KB (236 words) - 03:12, 13 December 2017
• Cleidopus gloriamaris
  ...e wild, they would attract shrimp and other zooplankton at night. They are difficult fish to feed in captivity and may only take live food. ...nd plenty of hiding places in the form of caves. Tank plants also would be very nesassary
  2 KB (353 words) - 09:04, 3 October 2022
• Hydrolycus scomberoides
  :Difficult to sex visually.
  3 KB (388 words) - 03:13, 13 December 2017
• Valenciennea puellaris
  :Difficult to visually sex.
  3 KB (385 words) - 03:13, 13 December 2017
• Iguanodectes spilurus
  ::This fish belongs to the very small sub-family ''Iguanodectinae'' and originates from the Amazon River Ba :Difficult. Females may appear fuller in the belly than males.
  2 KB (256 words) - 03:13, 13 December 2017
• Otocinclus mariae
  :Difficult. Females are slightly bigger than males. :A planted aquarium is a must. Ensure you get them in a shoal of at the very east 6. They are a nervous fish if not kept in groups and have been know to
  6 KB (958 words) - 15:17, 10 May 2018
• Suggestion
  I know I find keeping track of even the basic discussion difficult as editors post replied to each other on different pages! Makes sense to ha I've taken a look at SMF and it looks very neat. The MediaWiki/SMG integration however seems to be designed for SMF us
  10 KB (1,575 words) - 04:04, 26 December 2020
• Somileptus gongota
  :Difficult to sex visually. Not known to be bred in captivity. ...staceans or planaria. These fish can easily starve in captivity and can be difficult to wean on to suitable foods such as [[daphnia]]. Once settled they may tak
  3 KB (394 words) - 03:13, 13 December 2017
• Brachygobius doriae
  :Very difficult to sex visually and challenging to breed in captivity.
  2 KB (326 words) - 03:13, 13 December 2017
• Brachygobius nunus
  :Very difficult to sex visually and challenging to breed in captivity.
  2 KB (343 words) - 03:13, 13 December 2017
• Brachygobius sabanus
  :Very difficult to sex visually and challenging to breed in captivity.
  2 KB (332 words) - 03:13, 13 December 2017
• Cryptocentrus cinctus
  :Difficult to sex, females are often more grey in colour than males. ...ill develop a symbiotic relationship with many pistol shrimp. If kept with very boisterous fish it will spend most of its time hidden.
  3 KB (381 words) - 03:14, 13 December 2017
• Botia histrionica
  :These fish are difficult to sex visually, mature females may appear more broad in the abdomen. There
  2 KB (381 words) - 03:14, 13 December 2017
• Tubifex
  ...ifex probably includes several species, but distinguishing between them is difficult because reproductive organs, commonly used in species identification, are r *This is a small high protein food which makes it very suitable for small fish and fry. But be wary of feeding it constantly as no
  4 KB (635 words) - 06:15, 13 March 2011
• Campylomormyrus tamandua
  :Very sensitive to conditions. The elephantnose requires pristine water and a fin ...ses while searching for food, and to communicate with other Elephantnoses. Difficult to keep more than one in an aquarium, as this current can lead to violent "
  2 KB (269 words) - 21:16, 10 February 2021
• Salt Water Tank Clean-up Crew
  ...typically the primary mission of any clean-up crew. This is because it is difficult, and dangerous for your livestock, to remove algae from live rock by hand. ...an-up crew. Keep in mind though, your mileage with a specific species WILL very, so what works for one person may not work for another.
  7 KB (1,206 words) - 07:13, 16 August 2011
• Carnegiella myersi
  :Very difficult to visually sex, most will only be able to be sexed when the female is hold :A well-filtered mature tank without very bright lighting is needed for this fish. They do not do well in strong curr
  2 KB (306 words) - 03:14, 13 December 2017
• Paretroplus menarambo
  :Difficult to sex visually but will breed in captivity. They do not reach sexual matur ...k decorated with river-worn boulders and bogwood for cover. These fish are very sensitive to water quality issues and large water changes of 30%-50% should
  3 KB (402 words) - 03:14, 13 December 2017
• Mesonoemacheilus triangularis
  :It's difficult to sex this fish visually and there are no know reports of it breeding in c
  2 KB (316 words) - 13:40, 20 March 2024
• Chiloscyllium punctatum
  ...Females have a clocoa. They can be sexed immidiately after hatching, it is difficult (but not impossible) to sex them while they are in the egg. :Best in a very large species tank and will eat any inverts. It may act aggressively toward
  2 KB (365 words) - 23:08, 26 June 2020
• Pomacanthus asfur
  :The Asfur Angelfish is indistinguishable from male to female and very difficult to breed in an aquarium.
  3 KB (398 words) - 18:06, 15 June 2020
• Ctenochaetus hawaiiensis
  :An active Tang that can be sensitive to its environment and difficult to feed. ...base colour with a chevron pattern of purple-blue markings. Adults have a very fine pattern of dark-green stripes, giving the fish a dark brown appearance
  2 KB (291 words) - 21:03, 15 June 2020
• British Koi Keepers Society
  It is difficult to imagine in today's technological age how hard it was for our early pione
  1 KB (196 words) - 18:55, 30 April 2011
• Siganus guttatus
  :Difficult to visually sex this fish. ...s. Only one Rabbitfish per tank (pairs are possible however if the tank is very large). They are generally reef-safe, but may nip at soft corals if not wel
  3 KB (363 words) - 00:55, 17 June 2020
• Tanks
  *Difficult to scratch Rectangular tanks are very common, they provide a lot of viewing area and generally the largest footpr
  4 KB (685 words) - 00:23, 6 March 2020
• Anentome helena
  :Difficult to sex. (When they mate, the male always sit on the back of the often large ...d singly under water and are often eaten by other tank mates. So typically very slow breeders.
  3 KB (523 words) - 23:14, 14 February 2021
• Crossocheilus reticulatus
  :Difficult to visually sex. Mature females may have a fuller belly than males.
  2 KB (249 words) - 03:15, 13 December 2017
• Parambassis pulcinella
  :Difficult to visually sex, males will have a slightly larger and thicker hump than fe
  1 KB (180 words) - 03:15, 13 December 2017
• Parambassis siamensis
  :Difficult to visually sex this fish. Mature females may have eggs visible in their be
  2 KB (302 words) - 03:15, 13 December 2017
• Laemolyta taeniata
  :It is difficult to visually sex this fish. Mature females may appear more plump than males.
  2 KB (309 words) - 03:15, 13 December 2017
• Acorus gramineus
  |difficulty = very difficult
  1 KB (184 words) - 15:15, 27 December 2020
• Ammannia latifolia
  |difficulty = Difficult
  893 bytes (99 words) - 13:17, 7 June 2020
• Blyxa aubertii
  |difficulty = Difficult
  975 bytes (113 words) - 15:44, 7 June 2020
• Channa bleheri
  ...but only significantly when in breeding condition. They are exceptionally difficult to breed in captivity. ...like to be with too many of its own kind. A group can be kept, but only in very large aquaria with plenty of hiding places, and fighting may still occur. R
  3 KB (454 words) - 03:17, 13 December 2017
• DIY Plumbing 101
  ...e out how to get it in there. (Some stands have center braces that make it difficult to put large sumps inside.) If you are putting equipment in the sump, you n ...mp, and overflow. Both the siphon and the pump have the problem that it is difficult to balance the water going out of the aquarium with the water coming back i
  29 KB (5,252 words) - 14:39, 8 February 2018
• Sphyraena picudilla
  :A carnivorous fish that may prove difficult to wean onto dead food. Does well on meaty foods such as freeze-dried/froze
  2 KB (313 words) - 02:16, 3 January 2018
• Gobiodon citrinus
  :It is very difficult to visually sex Citron Gobies.
  2 KB (351 words) - 13:36, 12 September 2022
• Rhinecanthus aculeatus
  :Difficult to visually sex.
  2 KB (283 words) - 05:35, 17 June 2020
• Odonus niger
  :It is difficult to visually sex this fish and they are not known to breed in captivity.
  2 KB (350 words) - 02:31, 26 October 2023
• Holacanthus tricolor
  ...orial towards con-specifics. It is not reef safe as it will nip at corals. Very young fish may try and feed on tank mate's slime coats. :Difficult to feed in captivity, it mainly grazes on sponges in the wild. Feed vegetab
  3 KB (372 words) - 18:12, 15 June 2020
• Pterois radiata
  :It's very difficult to sex Lionfish, and breeding in captivity has so far been unsuccessful. :Difficult to feed. Will need lots of patience to get this fish to take frozen food. W
  2 KB (352 words) - 03:18, 13 December 2017
• Malawi Bloat
  ...ally, Bloat is not a disease in itself, rather a symptom of other problems very much like [[Dropsy]]. ...matic symptoms only appear quite late on in the problem, and will be quite difficult to reverse which is why early treatment for this problem is vital.
  2 KB (252 words) - 03:49, 14 February 2011
• Mosquito larva
  ...to feed upon. Leaf matter and other debris not only make collection more difficult, but may also encourage the growth of other creatures you do not want in yo
  3 KB (450 words) - 21:04, 7 November 2017
• Balloon
  ...as the stomach and intestines are distorted within the body making it more difficult for it to digest normal foods. These types of fish tend to need a special [
  1 KB (217 words) - 01:06, 14 February 2011
• Sarotherodon melanotheron
  :These fish are difficult to sex. West African Cichlid guru, Dr Anton Lamboj, states that males grow
  1 KB (196 words) - 03:16, 1 February 2019
• Trigonostigma espei
  ...der ratios are not important unless breeding is desired, and sexing can be difficult. Like some other species of ''Rasborinae'' the females may be slightly lar ...in home aquaria is unlikely as this species requires pristine, acidic, and very soft water for successful breeding.
  6 KB (925 words) - 03:18, 13 December 2017

View (previous 250 | next 250) (20 | 50 | 100 | 250 | 500)