Asian arowana

Scleropages formosus

Large scales, long rear fins and silvery-green scales.

The green form has silvery-green scales, paired chin barbels and a rounded tail.

Adult length: Up to 90 cm
Water temperature: 24–30 °C
Lifespan: 10–20 years

Natural habitat: Inhabits forested blackwater streams, including peat-associated waters stained dark by tannins.

A large predator.

View comparison →

Appearance and identification

Distinct from the South American silver arowana. This green form lacks the red scale crescents of the northern saratoga; other Asian forms need separate checks.

Adult space

Plan for adult housing.

Diet and feeding

Prey include insects and, in larger fish, other fish.

Compatibility limits

Small fish may be prey.

Sources

forestry.sarawak.gov.my ↗ 2026-10-22

www.fishbase.se ↗ 2026-10-25

blog.calacademy.org ↗ 2026-10-22

fishesofaustralia.net.au ↗ 2026-10-22