| Family: |
Acanthuridae (Surgeonfishes, tangs, unicornfishes), subfamily: Acanthurinae |
| Max. size: |
21 cm TL (male/unsexed) |
| Environment: |
reef-associated; marine |
| Distribution: |
Eastern Central Pacific: Line, Marquesas, Society, and Tuamoto islands to Pitcairn Group (Ducie Islands). |
| Diagnosis: |
Dorsal spines (total): 4-5; Dorsal soft rays (total): 23-28; Anal soft rays: 19-24. Colour dark brown to nearly black (in life with faint irregular longitudinal bluish lines following scale rows). Snout protruding. Body depth 1.9 to 2.1 times in SL. Lower teeth with 5 denticulations, the central one twice as large as adjacent ones (Ref 9808). |
| Biology: |
Inhabits lagoon and seaward reefs (Ref. 33204). Benthopelagic (Ref. 58302). Its small and numerous pharyngeal teeth suggest a diet that consists mainly of filamentous algae (Ref. 33204). |
| IUCN Red List Status: |
Data deficient (DD); Date assessed: 07 May 2010 Ref. (130435)
|
| Threat to humans: |
harmless |
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