Fishician®Diet
Omnivore – sinking pellets, algae wafers, frozen foods, vegetables
Aquarium species profile
Redtail Black Shark
Epalzeorhynchos bicolor · Southeast Asia (Thailand – critically endangered in the wild)
Minimum tank55 gal
Adult size6"
Care levelModerate
TemperamentAggressive
Temperature72–79°F
pH range6.5–7.5
Compatible tank mates
Mid- and upper-level dwellers; Barbs, Danios, larger tetras, Rainbowfish
Tank mates to avoid
Other Redtails, Rainbow Sharks, similar-shaped bottom fish
Care notes
Solid black body with bright red tail. Highly territorial; keep only one. Extinct in the wild; all aquarium specimens are captive-bred.
Check the whole aquarium. Tank size alone does not establish compatibility. Confirm adult size, water overlap, social grouping, territory, diet, and the individual animals before stocking.