Ray-finned fishes (Lat. Actinopterygii)
Perch-likes (Lat. Perciformes)
Surgeonfishes (Lat. Acanthuridae)
35 cm TL
Reef-associated; marine; depth range 3–46 m.
Tropical; 24°C–28°; 35°N–35°S, 95°E–139°W
Pacific Ocean: Cocos-Keeling Islands in the eastern Indian Ocean to the Hawaiian and Tuamoto islands, north to Japan, south to Lord Howe Island.
Inhabit seaward reefs, in areas of bare rock or mixed rubble and sand, from 9 to at least 46 m depth; juveniles inhabit protected bays and lagoons, singly or in small groups in as little as 3 m. Adults occur singly or in schools and feed on surface film of detritus, diatoms, and fine filamentous algae covering sand and bare rock. Rarely poisonous.