Arowana is a territorial fish, be sure to choose fish with similar body size, you can choose other middle-tier fish and lower-tier fish, such as goby, stingray , Feifeng, Colorful and so on.

If the size gap is too large, the smaller arowana is likely to be bullied by the larger fish, which will cause unnecessary damage during the fight. It is also for this reason that when the arowana is mixed, it is also recommended to start mixing from the juveniles.