any of about 12 species of Indo-Pacific fishes constituting the genus Amphiprion of the family Pomacentridae (order Perciformes), noted for their association with large sea anemones. Anemone fishes live and shelter among the tentacles of the anemones, swimming in and out unharmed by the stinging cells (nematocysts) that are present on the tentacles and that can be fatal to other fishes. A representative species, common in the Indo-Australian archipelago, is Amphiprion percula, also called the clown fish. Bright orange, with three wide, blue-white bands circling the body, it grows to a length of about five centimetres (two inches).