Acanthurus — Chirurgus

: A single, depressible sharp spine resides in a groove on each side of the caudal peduncle, which can inflict painful wounds on predators or handlers.

Acanthurus chirurgus, Doctorfish : fisheries, gamefish, aquarium acanthurus chirurgus

: Deep, strongly compressed oval body with a steep head profile and small, low-set mouth. : A single, depressible sharp spine resides in