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Naso tuberosus Lacepède, 1801 Humpnose unicornfish |
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photo by
Gloerfelt-Tarp, T. |
| Family: | Acanthuridae (Surgeonfishes, tangs, unicornfishes), subfamily: Nasinae | |||
| Max. size: | 60 cm SL (male/unsexed); max. reported age: 25 years | |||
| Environment: | reef-associated; brackish; marine | |||
| Distribution: | Western Indian Ocean: Mozambique, Mauritius, Reunion (Ref. 54356), and Seychelles. Probably more wide-ranging in the area. Western Central Pacific: Guam (Ref. 35720) and Australia (Ref. 2334). | |||
| Diagnosis: | Dorsal spines (total): 5-5; Dorsal soft rays (total): 26-29; Anal spines: 2-2; Anal soft rays: 26-28. Small blackish spots usually present, at least dorsoanteriorly on body. Adults with a large bulbous protuberance at front of snout (Ref 9808). | |||
| Biology: | Occurs in coral reefs. Diet consisted a high proportion of the green alga, Caulerpa. | |||
| IUCN Red List Status: | Data deficient (DD); Date assessed: 06 May 2010 Ref. (130435) | |||
| Threat to humans: | harmless | |||