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Naso brevirostris (Cuvier, 1829)

Spotted unicornfish
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Naso brevirostris   AquaMaps   Data sources: GBIF OBIS
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> Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335).
More on author: Cuvier.

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien rifbewoner; diepte 2 - 122 m (Ref. 58302), usually 4 - 46 m (Ref. 27115). Tropical; 24°C - 28°C (Ref. 27115); 29°N - 36°S, 26°E - 137°W (Ref. 57250)

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Indo-Pacific: Red Sea and East Africa to the Hawaiian, Marquesas and Ducie islands, north to southern Japan, south to Lord Howe Island (Ref. 1602); exxcluding Oman and Persian Gulf (Ref. 86689). Eastern Central Pacific: Galápagos Islands.

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL mannelijk / geslacht onbekend; (Ref. 9808)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 6; Dorsale zachte stralen (totaal): 27-29; Anale stekels 2; Anale zachte stralen: 27 - 30. This species is distinguished by the following characters: body moderately deep and compressed, its depth 2.6 to 3 times in standard length (SL) (reported greatest depth of body in subadults at 2.3 in SL, Ref. 90102); dorsal profile of body uniformly convex; adults with a median, broad-based, tapering, horn-like projection extending directly anteriorly from snout at level of lower part of eye to more than 1/2 head length in front of mouth (first developing as a bump on forehead of young of about 10 cm SL; dorsal profile of snout from upper lip to base of horn very short, curved, and nearly vertical; mouth small; teeth small, spatulate, with denticulate edges, about 50 in each jaw; a continuous unnotched D VI,27-29; A II,27-30; pectoral-fin rays 15-17; pelvic fins I,3; caudal fin slightly rounded, without a filament from each corner; 2 bony plates on each side of caudal peduncle, developing moderate keels with age; colour of body olivaceous grey-brown to light grey, usually with vertical dark brown lines on body which break into small spots dorsally and ventrally; some individuals only with small dark spots; head with small dark brown spots or short irregular lines which become long and oblique on horn (dark markings on one pale phase may be faint or absent; in another phase the anterior third of the body may be distinctly paler than the rest); caudal fin whitish with a large diffuse dark blotch centrobasally in fin (Ref. 9808).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Inhabit mid-waters along steep outer lagoon and seaward reef drop-offs. Also found along rocky shores (Ref. 30573, 48637). Benthopelagic (Ref. 58302). Usually in small groups but form large schools in oceanic locations or on reefs subject to strong currents (Ref. 48637). Juveniles and subadults feed on benthic algae; adults feed on zooplankton. Pair spawning has been observed. Caught with nets (Ref. 30573).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Probably spawn in pairs (Ref. 240).

Hoofdreferentie Upload your references | Referenties | Coördinator : Randall, John E. | Medewerkers

Myers, R.F., 1991. Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)

Status op de Rode Lijst van het IUCN (Ref. 125652)

  Niet bedreigd (LC) ; Date assessed: 04 May 2010

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Reports of ciguatera poisoning (Ref. 30298)





Gebruik door de mens

Visserij: commercieel; Aquarium: Commercieel
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Estimates based on models

Preferred temperature (Ref. 123201): 24.3 - 29, mean 27.8 °C (based on 1558 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01950 (0.01245 - 0.03054), b=3.01 (2.88 - 3.14), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  2.2   ±0.15 se; based on food items.
Generation time: 2.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.402; Tmax=25).
Fishing Vulnerability (Ref. 59153):  Low to moderate vulnerability (33 of 100).
Prijsklasse (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 36.2 [19.8, 65.2] mg/100g ; Iron = 0.649 [0.370, 1.048] mg/100g ; Protein = 19.1 [18.1, 20.1] % ; Omega3 = 0.117 [0.077, 0.196] g/100g ; Selenium = 43.6 [24.3, 81.6] μg/100g ; VitaminA = 22.1 [7.5, 65.0] μg/100g ; Zinc = 1.27 [0.78, 1.86] mg/100g (wet weight);