Prionurus punctatus, also known as Yellowtail Surgeonfish, is found in coral reefs from the Gulf of California to El Salvador.
The Yellowtail Surgeonfish has an overall gray appearance with its entire body being covered with dense small black spots. It has a bright yellow tail making for an easy identification. The Yellowtail Surgeonfish has a dark bar running horizontally through the eye and another through the shoulder. It has three pairs of white bony scalpel-like plates along the sides of the tail base.
Prionurus punctatus feed on Benthic algae. In an aquarium they must be fed frequently, mainly vegetables.