The Yellowspotted sawtail, Prionurus maculatus, is a tang of the family Acanthuridae, found in the southwest Pacific Ocean on rocky or coral reefs. Length is up to 17.72 in (45 cm).
The yellowspotted sawtail is a deep-bodied fish with a pointed snout, small fins, and a distinctive long-lobed caudal fin. Like all members of this family it has a sharp spine on each side of the caudal peduncle.
Yellowspotted sawtail are a uniform dark blue-grey in color with numerous small red-orange spots on the body and fins.
It is herbivorous, feeding on a variety of small seaweeds.