Can Green terror Live With Oscar?

Detailed assessment

Both Green terror and Oscar share a comfortable temperature range of 22–26°C (Green terror prefers 22–26°C, Oscar prefers 22–28°C). Their pH ranges overlap well at 6.5–8, so water chemistry is compatible. Both species have low aggression scores (Green terror: 3, Oscar: 3 out of 10), which supports peaceful cohabitation. The size difference is significant: Oscar reaches 45.7 cm while Green terror reaches only 20 cm, and the larger species may view the smaller one as prey. Note: fish 2x+ larger may eat smaller tankmates multiple territorial species in the same swim layer cause stress With careful monitoring and adequate tank size these species can usually coexist, but be prepared to separate them if aggression or stress appears.