New Caledonia country information

Common names: Bit, Chirurgien à marques jaunes
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Kerr, V.C., 2013
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Sight records from the Chesterfield Is. (Ref. 11897) and Ouvéa Atoll, Loyalty Is. (Ref. 13236). Also Ref. 37792, 52522.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/nc.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Myers, R.F., 1991
National Database:

Common names from other countries

Velvet surgeonfish, Goldrim surgeonfish, Gold-rim tang, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > 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 Ecology

Marine; reef-associated; depth range 0 - 67 m (Ref. 1602), usually 2 - 67 m (Ref. 27115). Tropical; 21°C - 29°C (Ref. 27115); 30°N - 24°S

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | 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 / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 36.0 cm FL male/unsexed; (Ref. 125599); max. published weight: 620.00 g (Ref. 125599); max. reported age: 34 years (Ref. 52229)

Short description Morphology | Morphometrics

Dorsal spines (total): 9; Dorsal soft rays (total): 28-31; Anal spines: 3; Anal soft rays: 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.

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). Minimum depth reported taken from Ref. 128797.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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

Main reference Upload your references | References | Coordinator : Randall, John E. | Collaborators

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

IUCN Red List Status (Ref. 130435)

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

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: subsistence fisheries; aquarium: commercial

FAO(Publication : search) | FishSource | Sea Around Us

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Internet sources

Estimates based on models

Preferred temperature (Ref. 115969): 24.5 - 28.8, mean 27.4 (based on 650 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.02630 (0.01489 - 0.04645), b=2.93 (2.78 - 3.08), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.0 ±0.00 se; based on food items.

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.28; growth and reproduction as expected for Medium; tmax=34 observed only in deep water (RF)).

Fishing Vulnerability (Ref. 59153): Low vulnerability (23 of 100).

Price category (Ref. 80766): Medium.

Acanthurus nigricans (Linnaeus, 1758)