Can Guppy Live With Molly?

Detailed assessment

Both Guppy and Molly share a comfortable temperature range of 24–28°C (Guppy prefers 22–28°C, Molly prefers 24–28°C). Their pH ranges overlap well at 7.5–8, so water chemistry is compatible. Both species have low aggression scores (Guppy: 1, Molly: 1 out of 10), which supports peaceful cohabitation. They occupy different water columns (Guppy: middle, Molly: all), which reduces direct competition for space. Overall, these two species can coexist peacefully in a well-maintained community tank with appropriate space.