Acanthurus reversus Randall & Earle 1999

Caudal concavity 3.35-4.7 in SL; brown in life, the posterior half of body sometimes abruptly paler, with an elongate orange spot extending posteriorly from upper end of gill opening, the posterior half enclosed by a broad, deep blue band that extends beyond tip of pectoral fin; dorsal and anal fin base with a faint orange line, the soft portion of the dorsal with three dark longitudinal bands on outer one-half of fin, the anal fin with a narrow blue margin; caudal fin pale yellow with a broad black posterior border that narrows as it extends onto elongate lobes of fin; outer one-third of pectoral fins abruptly white; juveniles bright yellow with blue margins on dorsal and anal fins (Ref. 41630).

Dorsal spines (total): 9; Dorsal soft rays (total): 24 - 25; Analspines: 3; Analsoft rays: 23 - 24

Found inshore (Ref. 41630). Feeds on filamentous algae (Ref. 89972).

Acanthurus reversus is a tropical fish found in coral reefs in the Marquesas Islands. It was first named by Randall and Earle in 1999.