Fin nipping dulls colour and stresses guppies. Choose peaceful companions and set the environment to reduce pressure.
Tank mates that work
- Dwarf corydoras and small rasboras: ignore fins and share food calmly.
- Shrimp and snails: clean-up crew that leaves guppies alone.
Scape and flow
- Add plants and hardscape to break line of sight.
- Keep flow gentle; strong currents encourage chasing.
Feeding strategy
Feed small, frequent portions so no one competes aggressively at the surface. If a fish persists in nipping, rehome it and expand cover before the next addition.