Aquarium species profile

Arowana

Osteoglossum bicirrhosum (Silver) / Scleropages spp. (Asian) · South America (Amazon basin), Southeast Asia

Minimum tank250 gal

Adult size36–48"

Care levelHard

TemperamentAggressive

Temperature75–86°F

pH range6.0–7.5

Diet

Carnivore – pellets for predatory fish, shrimp, fish, insects, occasional feeder fish

Compatible tank mates

Very large robust fish only; large Plecos, large catfish, Datnoids, Stingrays

Tank mates to avoid

Anything that fits in mouth, small/medium fish, fin-nippers

Care notes

Ancient bonytongue fish. Asian Arowana is CITES regulated. Surface dwellers; tight lid critical (powerful jumpers). Drop-eye condition is common.

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.

Check compatibility in Fishician