Naso unicornis (Forsskål, 1775)

Bluespine unicornfish

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

Classification	Actinopterygii \| Perciformes \| Acanthuridae \| Nasinae
Synonyms	Chaetodon unicornis, Acanthurus unicornis, ... more
Common names	Nason à éperons bleus, Berbero de aguijon azul, Unicornfish, ... more

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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 : 70.0 cm FL male/unsexed; (Ref. 9710); common length : 50.0 cm TL male/unsexed; (Ref. 3146)

Environment

Reef-associated; marine; depth range 1 - 180 m (Ref. 9710), usually 5 - 180 m (Ref. 27115)

Climate / Range

Tropical; 26°C - 29°C (Ref. 27115); 35°N - 33°S

Indo-Pacific: Red Sea and East Africa (Ref. 3145) to the Hawaiian, Marquesas and Tuamoto islands, north to southern Japan, south to Lord Howe and Rapa islands. Presence in Somalia to be confirmed (Ref. 30573).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 6; Dorsal soft rays (total): 27 - 30; Anal spines: 2; Anal soft rays: 27 - 30. Presence of a horn or rostrum. Both caudal lobes prolonged into filaments. Adult males tend to have better developed horn, peduncular spines, and caudal filaments than females of the same size. Caudal fin

Inhabit channels, moats, lagoon and seaward reefs with strong surge (Ref. 48637). Benthopelagic (Ref. 58302). Typically occurring in small groups. Juveniles in shallow protected bays and harbours (Ref. 48637). Mainly diurnal, feed on coarse leafy brown algae like Sargassum. Pair-spawning has been observed.


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Reports of ciguatera poisoning (Ref. 4795)

Human uses
Fisheries: commercial; gamefish: yes; 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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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (K=0.14)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High vulnerability (57 of 100)	Medium

Entered by Luna, Susan M.

Modified by Ortañez, Auda Kareen

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Page last modified by : elaxamana, 15 July 2009

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