Paracanthurus hepatus is a species of Indo-Pacific surgeonfish. A popular fish in marine aquaria, it is the only member of the genus Paracanthurus. Lifespan: 8 – 20 years (In captivity) Length: 25 – 31 cm (Adult) Class: Actinopterygii Family: Acanthuridae Scientific name: Paracanthurus hepatus Kingdom: Animalia