damselfish

noun, plural (especially collectively) dam·sel·fish, (especially referring to two or more kinds or species) dam·sel·fish·es.

1. any of several chiefly tropical, brilliantly colored, marine fishes of the family Pomacentridae, living among coral reefs.

noun plural -fish or -fishes

1. any small tropical percoid fish of the family Pomacentridae, having a brightly coloured deep compressed bodySee also anemone fish