Naso brachycentron (Valenciennes, 1835)

Humpback unicornfish

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Actinopterygii \| Perciformes \| Acanthuridae \| Nasinae
Synonyms	Naseus brachycentron, Naso rigoletto, ... more
Common names	Humpback unicorn, Nason bossu, Pukkelrygget næsehornsfisk, ... more

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Image of Naso brachycentron (Humpback unicornfish)

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This map was computer-generated and has not yet been reviewed.

AquaMaps Data sources: GBIF OBIS

Main reference

Myers, R.F. 1991. (Ref. 1602)
Other references | Biblio | Coordinator : Randall, John E. | Collaborators

Size / Weight / Age

Max length : 90.0 cm FL male/unsexed; (Ref. 1602)

Environment

Reef-associated; marine; depth range 2 - 20 m (Ref. 27115), usually 15 - 20 m (Ref. 48637)

Climate / Range

Tropical; 25°C - 28°C (Ref. 27115); 33°N - 25°S

Indo-Pacific: East Africa to the Marquesan and Society islands, north to the Ryukyu Islands, south to Vanuatu.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 28 - 30; Anal spines: 2; Anal soft rays: 27 - 28. Distinctive humped back; horn only in adult males. A few scattered small dark-edged pale spots on postorbital head and body above pectoral fins. No white margin posteriorly on caudal fin. Profile of snout from mouth to eye strongly sloping, forming an angle of about 40° to horizontal axis of body (Ref 9808).

Inhabits deep coastal, usually in small groups but occasionally in large schools (Ref. 48637). An uncommon species found in seaward reef slopes (Ref. 9710, 48637), also along rocky shores (Ref. 30573). Feeds on benthic algae (Ref. 30573). Caught with nets (Ref. 30573).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Aquarium: commercial


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (K=0.429; Tmax=31)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High to very high vulnerability (67 of 100)	Medium

Entered by Capuli, Estelita Emily

Modified by Kesner-Reyes, Kathleen

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Page last modified by : elaxamana, 15 July 2009

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