Acanthuridae

thumb|The exposed caudal spine of Acanthurus xanthopterus

genus of fishes

Prionurus is a genus of marine ray-finned fishes belonging to the family Acanthuridae, the surgeonfishes, unicornfishes and tangs, although some of the species in this genus are called sawtails or doctorfish. The species in this genus are found in the Pacific Ocean with one species, P. biafraensis, found in the Atlantic Ocean.

species of fish

Naseus is an extinct genus of surgeonfishes from the Lutetian-aged Monte Bolca Lagerstätte.