Porcelain Crabs live together or in pairs under the protection of an anemone. It can try to defend its territory from clownfish that try to settle in anemones, although clownfish generally prevail.
It should not be kept along with larger, aggressive crabs that can attack it.
These crabs eat planktonic food and mucus from the anemone. It can be supplemented with food for tablets placed next to the anemone.