Can Guppy Live With Otocinclus?

Detailed assessment

Both Guppy and Otocinclus share a comfortable temperature range of 22–26°C (Guppy prefers 22–28°C, Otocinclus prefers 21–26°C). Their pH ranges overlap well at 7–7.5, so water chemistry is compatible. Both species have low aggression scores (Guppy: 1, Otocinclus: 1 out of 10), which supports peaceful cohabitation. They occupy different water columns (Guppy: middle, Otocinclus: bottom), which reduces direct competition for space. Overall, these two species can coexist peacefully in a well-maintained community tank with appropriate space.