Can Sumatra barb 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 (Sumatra barb: 1, Zebra danio: 1 out of 10), which supports peaceful cohabitation. They occupy different water columns (Sumatra barb: middle, Zebra danio: all), which reduces direct competition for space. Overall, these two species can coexist peacefully in a well-maintained community tank with appropriate space.