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• 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

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