Guppies in Community Tanks
Guppies are one of the best community fish available. They are peaceful, active, and add brilliant color to any tank. The key to a successful guppy community is choosing tank mates that share similar water requirements and won't eat or harass your guppies.
The biggest threats to guppies in community tanks are: large predatory fish that will eat them, fin nippers that target their colorful tails, and aggressive territorial species. An equally important consideration is whether your tank mates will eat guppy fry — nearly all fish will.
Perfect Tank Mates
These species are tried-and-true companions for guppies in community tanks.
- ✦Corydoras catfish (any species): peaceful bottom feeders, keep in groups of 6+. Bronze, Panda, and Peppered Corys are the most common. 20+ gallon tank.
- ✦Neon tetras: colorful schooling fish, keep in groups of 8+. Similar temperature and pH requirements. 15+ gallons.
- ✦Cardinal tetras: slightly larger and more colorful than neons. Same care requirements. 20+ gallons.
- ✦Platies: fellow livebearers with similar water needs. Colorful, peaceful, easy to keep. 15+ gallons.
- ✦Mollies: larger livebearers, prefer slightly harder water. Good match in 20+ gallon tanks.
- ✦Bristlenose plecos: small algae-eating catfish (4-5 inches). One per 20-gallon tank.
- ✦Nerite snails: best algae eaters, can't breed in freshwater. Add 2-3 per tank.
- ✦Cherry shrimp: colorful, breed readily in planted tanks. Beautiful and clean up waste.
- ✦Amano shrimp: best algae-eating shrimp. Larger than cherry shrimp, won't breed in freshwater.
- ✦Otocinclus catfish: tiny algae eaters, keep in groups of 6+. Delicate but wonderful in planted tanks.
Species to Avoid
These species will cause problems in a guppy community tank.
- ✦Angelfish: will eat adult guppies — they grow large enough to swallow them whole
- ✦Bettas: mistake guppy tails for rival bettas and attack relentlessly
- ✦Tiger barbs: notorious fin nippers — they will shred guppy tails within hours
- ✦Cichlids (African or South American): too aggressive and territorial
- ✦Large gouramis (Pearl, Kissing): can bully and eat guppies
- ✦Chinese algae eaters: peaceful when young, aggressive as adults — suck slime coat off fish
- ✦Red tail sharks: territorial and aggressive toward anything in their zone
- ✦Goldfish: cold water (65-72°F) vs tropical guppies (74-78°F) — incompatible
Protecting Fry in Community Tanks
In a community tank, guppy fry will be eaten by almost all tank mates — including adult guppies, tetras, and corys. If you want fry to survive, dense floating plants (guppy grass, hornwort, water sprite) are essential. They provide hiding spots where fry can escape predation.
For maximum fry survival, use a separate breeding/fry tank. Move the pregnant female to the fry tank before she gives birth, let her deliver, remove her, and raise the fry separately until they are large enough (about 1 inch) to return to the community tank safely.
Some keepers accept natural population control — letting the community eat most fry while a few survive in the plants. This is actually a healthy approach that prevents overpopulation.