| Family: |
Acanthuridae (Surgeonfishes, tangs, unicornfishes), subfamily: Acanthurinae |
| Max. size: |
25 cm TL (male/unsexed) |
| Environment: |
reef-associated; marine; depth range 1 - 85 m |
| Distribution: |
Western Central Pacific: primarily anti-equatorial; Mariana Islands, southern Japan, Marcus Islands, and the Hawaiian Islands in the north and New Caledonia, Rapa (Austral Islands), and Tuamoto Islands, Pitcairn group, and Easter Island in the south. |
| Diagnosis: |
Dorsal spines (total): 9-9; Dorsal soft rays (total): 25-27; Anal spines: 3-3; Anal soft rays: 23-25. A whitish bar broadly bordered by dark brown from origin of dorsal fin across operculum. Caudal fin without a white posterior margin. Caudal concavity 10.5 to 12 times in SL. Body depth 1.7 to 1.8 times in SL (Ref 9808). |
| Biology: |
Inhabits primarily boulder-strewn areas of surge zone and browses on filamentous algae (Ref. 9710). Benthopelagic (Ref. 58302). Often in schools (Ref. 9710). Minimum depth reported from Ref. 27115. |
| IUCN Red List Status: |
Least Concern (LC); Date assessed: 03 May 2010 Ref. (130435)
|
| Threat to humans: |
reports of ciguatera poisoning |
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