Can Guppy Live With Sumatra barb?

Detailed assessment

Both Guppy and Sumatra barb share a comfortable temperature range of 20–26°C (Guppy prefers 17–28°C, Sumatra barb prefers 20–26°C). Their pH ranges overlap well at 7–8, so water chemistry is compatible. Both species have low aggression scores (Guppy: 1, Sumatra barb: 1 out of 5), which supports peaceful cohabitation. They occupy different water columns (Guppy: top, Sumatra barb: middle), which reduces direct competition for space. Overall, these two species can coexist peacefully in a well-maintained community tank with appropriate space.