Family: |
Acanthuridae (Surgeonfishes, tangs, unicornfishes), subfamily: Acanthurinae |
Max. size: |
34 cm TL (male/unsexed) |
Environment: |
reef-associated; marine; depth range 4 - 15 m |
Distribution: |
Eastern Central Pacific: Marquesas Islands. |
Diagnosis: |
Dorsal spines (total): 9-9; Dorsal soft rays (total): 24-25; Anal spines: 3-3; Anal soft rays: 23-24. 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). |
Biology: |
Found inshore (Ref. 41630). Feeds on filamentous algae (Ref. 89972). |
IUCN Red List Status: |
Least Concern (LC); Date assessed: 04 May 2010 Ref. (130435)
|
Threat to humans: |
harmless |
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