Author: (Linnaeus, 1758)
FBname: Convict surgeonfish
Remark: Planes and Fauvelot (2002) studied <i>Acanthurus triostegus</i> over its vast range and published in the journal Evolution and they did not recognize <i>Acanthurus triostegus sandvicensis</i> as a species.  FishBase follows Randall, 1956 with <i>A. sandvicensis</i>  as a subspecies (synonym) of <i>A. triostegus</i>.
Comments: Adults occur in lagoon and seaward reefs with hard substrate; young abundant in tide pools (Ref. 3145, 48637).  Benthopelagic (Ref. 58302).  Often feeding near freshwater run-offs where certain algae grow on rocks that are grazed (Ref. 48637).  Occasionally form schools; feed on filamentous algae in large aggregations.  During spawning, clouds of eggs and sperm are preyed upon by eagle rays which are often present during spawning.  Form spawning aggregations (Ref. 27825).  Size of metamorphosis from post-larva stage to juvenile is 3.2 cm (Ref. 9267).  Utilized as a food fish (Ref. 7364).  Minimum depth reported taken from Ref. 27115.