All tools
Tank Mate Compatibility Checker
Pick any two species from the catalogue and see a compatibility assessment based on temperament, water parameter overlap, size differences, and temperament. Green / yellow / red with reasoning so you understand WHY, not just whether.
Tank Mate Checker
Pick any two species to see if they'll get along.
Good tank mates
Neon Tetra (Paracheirodon innesi) + Cardinal Tetra (Paracheirodon axelrodi)
- • Temperature, pH, and temperament are all compatible.
This is a rough check based on water parameters, temperament, and size. Individual fish temperament varies — always research the exact species you plan to keep and provide escape routes for shyer fish.