a coral reef fish of blue tang acanthurus coeruleus, a surgeonfish family

acanthurus aden algae and anemone animal aqua aquaria aquarium atlantic barber blue bright butterfly butterflyfish chaetodon cheek cheeked coeruleus color colorful commonly coral creature doctor doctorfish family fish found freshwater gulf hepatus hippo indo marine names ocean other pacific palette paracanthurus red reef regal saltwater sea seawater semilarvatus strip such surgeon surgeonfish tang tank underwater vivid water yellow