Best Guppy Tank Mates

Tank sizing baseline: ≥40 L starter; more volume for multispecies
Temperament cue: Peaceful/high activity
Water window: 7–8 pH tolerated by farm strains broadly

Community snapshot

Guppies mix well with mellow livebearers and small catfish if foot-print and feeding stay honest.

Compatible species

Model combinations responsibly with the free aquarium stocking calculator.

Browser calculator stays free. The app only matters if you want several tanks, photos, and test history on your phone.