Author: Valenciennes, 1835
FBname: Bluelined surgeonfish
Remark: The species <i>Acanthurus nigros</i> Günther 1861 is considered valid in Eschmeyer (CofF ver. Sep. 2011: Ref. 88002) following Randall & Parenti (2011).  But could be an unjustified ementation of <i>nigroris</i>.  More studies are needed.
Comments: Inhabits clear lagoon and seaward reefs; often in areas with mixed coral, pavement, rubble and sand substrates (Ref. 1602).  Benthopelagic (Ref. 58302).  Occurs singly or in small groups (Ref. 9710).  Feeds on filamentous algae, diatoms and fine algal film of compacted sand (Ref. 1602).  Relatively uncommon throughout Micronesia; rare on Great Barrier Reef.