10 Things to Know Before Keeping Arowana Fish in Home Aquarium.

BY SANDHYA  |  26 JULY  2025

They can grow up to 3 feet long, so they need a large tank with ample swimming space.

Arowanas Are Big Fish

Start with at least a 250-gallon tank for a single adult Arowana.

 Minimum Tank Size

Arowanas often jump out of tanks. Use a tight, secure lid to avoid accidents.

Strong Jumpers

Feed them live food like insects, shrimp, and small fish for best health and growth.

Carnivorous Diet

Arowanas require pristine water conditions—frequent water changes are a must.

Need for Clean Water

They stress easily due to noise, movement, or tank mates, affecting their health.

Sensitive to Stress

Not ideal for community tanks—they can be territorial and aggressive.

Long Lifespan

Some Arowana species like Asian Arowanas are protected and restricted in many countries.

Legal Restrictions

They are expensive to buy and maintain—think of them as luxury aquarium pets.

High Cost & Maintenance