blue-cheeked fish chaetodon semilarvatus, a species of butterflyfish of mostly yellow

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