Can Giant danio Live With Zebra danio?

Detailed assessment

Their pH ranges overlap well at 6–8, so water chemistry is compatible. Both species have low aggression scores (Giant danio: 1, Zebra danio: 1 out of 10), which supports peaceful cohabitation. The size difference is significant: Giant danio reaches 15 cm while Zebra danio reaches only 3.8 cm, and the larger species may view the smaller one as prey. Note: fish 2x+ larger may eat smaller tankmates With careful monitoring and adequate tank size these species can usually coexist, but be prepared to separate them if aggression or stress appears.