Milletseed Butterflyfish (Chaetodon citrinellus) in a tight school off Kauai, Hawaii, during the spring, Kauai, Hawaii, United States of America

black bright butterflyfish chaetodon miliaris chaetodontidae class actinopterygii close up detail eye fish five animals focus on foreground hawaii hawaiian endemic hawaiian islands horizontal infraclass teleostei marine life milletseed butterflyfish no people ocean pacific ocean perciformes percoidei phyllum chordata schooling sea life side view subclass neopterygii teleost underwater vertebrate water yellow endemic hawaiia tropical climate animal animals close up details fishes kauai island no one nobody seacam underwater housing spring underwater photography tropics school of fish tropical