FAQ

Frequently Asked Questions

What tank size does an arowana need?

Plan long-term, not for the fish you're bringing home today. A juvenile can start in 75-90 gallons, but a full-grown arowana (2-3 feet depending on species) needs 250+ gallons and, ideally, a tank longer than the fish so it can turn around without stress.

Can arowanas live with other fish?

Yes, with the right tankmates. Arowanas are surface-oriented predators, so they pair well with larger, sturdy bottom and mid-water fish that won't fit in their mouth — large plecos, oscars, and similarly-sized cichlids are common choices. Avoid anything small enough to be seen as food.

Do arowanas need a tank cover?

Yes, and a secure one. Arowanas are powerful jumpers, especially when startled or chasing food near the surface, and jumping out of an open or poorly-secured tank is one of the most common ways keepers lose a fish.

What's the difference between Asian, Silver, and other arowana types?

They're different species entirely, not color variants of one fish. Asian arowana (Scleropages formosus) includes the red, golden, and green varieties and is CITES-restricted in most countries; Silver arowana (Osteoglossum bicirrhosum) is South American, unrestricted, and the most commonly kept type in the US.

How fast do arowanas grow?

Quickly in the first 1-2 years — several inches every few months under good feeding and water conditions — which is exactly why undersizing the tank early is the most common mistake new keepers make.