Tokelau country information

Common names: Aheu, Amafua, Lupoaheu
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/tl.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/Tokelau/tokelau.htm
Occurrences: Occurrences Point map
Main Ref: Smith-Vaniz, W.F., 1984
National Database:

Common names from other countries

Carangue aîle bleue, Jurel de aleta azul, Bluefinned crevalle, ... more

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Carangiformes (Jacks) > Carangidae (Jacks and pompanos) > Caranginae
Etymology: Caranx: French, carangue, the name of a Caribbean fish; 1836 (Ref. 45335).
More on author: Cuvier.

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

marien; brak water rifbewoner; diepte 0 - 190 m (Ref. 9710). Tropical; 35°N - 35°S, 30°E - 78°W

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Indo-Pacific: Red Sea and East Africa to Ducie Island, north to the Ryukyu Islands, south to New Caledonia. Eastern Central Pacific: Mexico to Panama (Ref. 9283). Hybrid with Caranx sexfasciatus found in Hawaii (Ref. 58422).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m 35.0 range ? - ? cm
Max length : 117 cm FL mannelijk / geslacht onbekend; (Ref. 40637); common length : 60.0 cm TL mannelijk / geslacht onbekend; (Ref. 3280); max. gepubliceerd gewicht: 43.5 kg (Ref. 4699)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 9; Dorsale zachte stralen (totaal) : 21 - 24; Anale stekels: 3; Anale zachte stralen: 17 - 21; Wervels: 24. This species is distinguished by the following characters: gill rakers (including rudiments) 5-9 + 17-21 = 25-29 (usually 26-27); breast completely scaly; straight part of lateral line with 0-10 anterior scales followed by 27-42 strong scutes; adipose eyelid weakly developed, small anteriorly, posterior adipose eyelid extends onto eye to rear border of pupil in large adults; upper jaw with outer row of strong canines widely spaced in adults, and an inner band of small villiform teeth, widest at symphysis; lower limb of first gill arch jaw with a single row of strong conical teeth widely spaced in adults. Colour of adults with head and dorsal half of body brassy, suffused with blue, and covered with small blue black spots (forming at about 16 to 22 cm fork length and increasing in number with size); second dorsal, anal, and caudal fins electric blue; juveniles and young adults, head and body silvery grey and fins pale to dark dusky, except pectoral fins yellow (Ref. 9894, 90102).

The most common trevally in coral reefs occurring singly or occasionally in schools (Ref. 90102). Adults are pelagic in coastal and oceanic waters, associated with reefs (Ref. 9283, 58302). Juveniles occur seasonally in shallow sandy inshore waters (Ref. 9710) and rivers (Ref. 12792). Adults feed mainly on other fishes (Ref. 9283) and crustaceans (Ref. 9710). They are often toxic when length reaches more than 50 cm (Ref. 4795). Mainly marketed fresh, but also dried or salted (Ref. 9283). They are caught primarily on hook-and-line and by spearing; also with traps and gill nets. An excellent sports fish (Ref. 9894).

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven

Hoofdreferentie Upload your references | Referenties | Coördinator : Smith-Vaniz, William F. | Medewerkers

Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Niet bedreigd (LC) ; Date assessed: 09 March 2015

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Reports of ciguatera poisoning (Ref. 4690)

Gebruik door de mens

Visserij: commercieel; Aquacultuur: commercieel; sportvis: ja; Aquarium: Publieke aquaria

FAO(visserij: productie; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 23.2 - 29, mean 27.9 (based on 2624 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01778 (0.01459 - 0.02168), b=2.95 (2.92 - 2.98), in cm Total Length, based on LWR estimates for this species (Ref. 93245).

Trofisch niveau (Ref. 69278): 4.5 ±0.8 se; based on diet studies.

Weerstandsvermogen (Ref. 120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.23; tm=2; Fec=49,700).

Prior r = 0.69, 95% CL = 0.45 - 1.03, Based on 3 data-limited stock assessments.

Fishing Vulnerability (Ref. 59153): High vulnerability (56 of 100).

Climate Vulnerability (Ref. 125649): High to very high vulnerability (75 of 100).

Prijsklasse (Ref. 80766): High.

Caranx melampygus Cuvier, 1833