Orangespot surgeonfish

Acanthurus olivaceus
  • Class:
    Ray-finned fishes (Lat. Actinopterygii)
  • Order:
    Perch-likes (Lat. Perciformes)
  • Family:
    Surgeonfishes (Lat. Acanthuridae)
  • Maximum size:
    35 cm TL
  • Habitat:
    Reef-associated; marine; depth range 3–46 m.
  • Climate:
    Tropical; 24°C–28°; 35°N–35°S, 95°E–139°W
  • Distribution:
    Pacific Ocean: Cocos-Keeling Islands in the eastern Indian Ocean to the Hawaiian and Tuamoto islands, north to Japan, south to Lord Howe Island.
  • Biology:
    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.