Rachow's Darter Tetra‎ (Characidium rachovii)

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Rachow's Darter Tetra‎

Hummingbird Tetra 1.jpg
Rachow's Darter Tetra

Characidium rachovii

57 Litres (15 US G.)

4-5 cm (1.6-2")




5.6 - 7.5

20 -24 °C (68-75.2°F)

10-25 °d

1:2 M:F

Pellet Foods
Flake Foods
Live Foods

5-8 years



Additional names

Rachow's Darter Tetra, Walking Tetra, Hummingbird Tetra

Additional scientific names

Characidium rachowi, Jobertina rachowi, Characidium theageri


South America: lower Paraná River basin; Uruguay River basin; coastal drainages from Rio Grande do Sul to La Plata River.

Tank compatibility[edit]

A bottom dwelling Tetra that appreciates others of it's kind. Do not keep with larger predatory fish, peaceful mid-top dwellers of similar size may work well such as Hatchetfish and Danios.


Will eat most kinds of food that end up on the bottom of the tank. However, due to its narrow mouth it has a hard time with sinking pellets and other larger foods. Seems to enjoy bloodworms.

Feeding regime[edit]

Feed once or twice a day.


Spends most of its time on the bottom of the tank, resting on its pectoral fins. Will occasionally hover in place by beating its fins rapidly, similar to a hummingbird.


The Darter Tetra has an elongated body with black markings running down the side. They have a narrow face and pronounced pectoral fins.


External links[edit]