| Family: |
Acanthuridae (Surgeonfishes, tangs, unicornfishes), subfamily: Prionurinae |
| Max. size: |
70 cm TL (male/unsexed) |
| Environment: |
reef-associated; brackish; marine |
| Distribution: |
Western Pacific: eastern Australia, including Lord Howe Island (Ref. 2334) and Japan (Ref. 27683). |
| Diagnosis: |
Dorsal spines (total): 8-8; Dorsal soft rays (total): 21-22; Anal spines: 3-3; Anal soft rays: 20-21. Colour grey-brown with indistinct dark bars on side of body, the 5 to 7 peduncular plates black. Body depth of subadults about 2 times in SL, the body becoming more elongate with age (to as much 3 times in SL in large adults). Adults developing a pronounced protuberance anteriorly on snout (Ref 9808). |
| Biology: |
Occurs along rocky shores and feeds on benthic algae. Juveniles found in estuaries and bays (Ref. 9710). |
| IUCN Red List Status: |
Least Concern (LC); Date assessed: 07 May 2010 Ref. (130435)
|
| Threat to humans: |
harmless |
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