Choose calm, similarly sized fish so guppies keep their tails intact and stay confident at feeding time.
Safe companions
- Dwarf corydoras: peaceful bottom dwellers that clean leftovers.
- Small rasboras or ember tetras: active mid-water swimmers that ignore guppy fins.
- Cherry shrimp: thrive alongside guppies and help with algae; provide moss for hiding.
Species to skip
- Fin-nippers like tiger barbs or red-eye tetras.
- Large gourami or angelfish that may hunt fry.
- Aggressive bottom dwellers that dominate food.
Introduce new tank mates after a water change and feed lightly so everyone settles without competing.