Acanthurus nigricans, Whitecheek surgeonfish : fisheries, aquarium

Acanthurus nigricans (Linnaeus 1758)

Whitecheek surgeonfish
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Acanthurus nigricans
Picture by Randall, J.E.

Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

> Acanthuriformes (Surgeonfishes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Acanthurinae
Etymology: Acanthurus: Greek, akantha = thorn + Greek, oura = tail (Ref. 45335).  More on author: Linnaeus.

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

; marina revassocierade; djupintervall 1 - 67 m (Ref. 1602), usually 2 - 67 m (Ref. 27115).   Tropical; 21°C - 29°C (Ref. 27115); 30°N - 24°S

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Eastern Indian Ocean: known only from Cocos-Keeling Islands and Christmas Island. Pacific Ocean: Ryukyu Islands and Great Barrier Reef to the Hawaiian Islands and French Polynesia (excluding Rapa). This species has crossed the Eastern Pacific Barrier to the Revillagigedo Islands, Cocos Island, Galapagos Islands, and the coast of Mexico.

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 21.3 cm TL hane/ej könsbestämd; (Ref. 2334); rapporterad maxålder: 34 år (Ref. 52229)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 9; Mjukstrålar i ryggfenan (totalt): 28-31; Taggstrålar i analfenan 3; Mjukstrålar i analfenan: 26 - 28. A horizontally elongate white blotch directly below eye. No orange band in outer part of dorsal fin. Caudal peduncle black except for yellow edge of socket and sheath of peduncular spine. Base of pectoral fin black (ref 9808).Gill rakers on anterior row:17-19, on posterior row:18-20.

Biologi     Ordlista (t.ex. epibenthic)

Adults inhabit hard substrate areas of clear lagoon and seaward reefs from the lower surge zone to at least 67 m and feeds on filamentous algae. Solitary or in groups (Ref. 90102). Monogamous (Ref. 52884, 48637). Benthopelagic (Ref. 58302). Small juveniles shy among large corals (Ref. 48637). Territorial species. Common throughout Micronesia and hybridizes with the rare A. achilles. Size of metamorphosis from the postlarva stage to juvenile is 5.5 to 6 cm (Ref. 9267).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Monogamous mating is observed as both facultative and social (Ref. 52884).

Main reference Upload your references | referenser | Koordinator : Randall, John E. | Medarbetare

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

IUCN Red List Status (Ref. 123251)

  Least Concern (LC) ; Date assessed: 04 May 2010

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: husbehovsfiske; Akvarium: Kommersiell
FAO(Publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 24.5 - 28.8, mean 27.4 °C (based on 650 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02630 (0.01517 - 0.04562), b=2.93 (2.78 - 3.08), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trofisk nivå (Ref. 69278):  2.0   ±0.00 se; based on food items.
Generation time: 3.9 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resiliens (Ref. 120179):  Mycket låg, lägsta populationsfördubblingstid mer än 14 år (K=0.28; tmax=34).
Vulnerability (Ref. 59153):  Low vulnerability (20 of 100) .
Price category (Ref. 80766):   Medium.