About CheckMyFishTank

CheckMyFishTank helps everyday fish keepers keep their fish alive. Most new fish die from things that are easy to prevent: a tank that is not ready yet, water nobody tested, or tank mates that do not get along.

The app answers those questions in plain words: when a new tank is safe, what a water test means and what to do today, which fish get along, and what might be wrong with a sick fish.

How the fish information is checked

All 180 fish in the app and on this site were checked against at least two trusted fish care sources, such as Seriously Fish, LiveAquaria and Aquarium Co-Op. When sources disagree, we use the safer value: the bigger tank, the narrower temperature range, the bigger group. Each care sheet lists its sources.

Questions or corrections? Email hello@checkmyfishtank.com.