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Caranx rhonchus GeoffroySaint-Hilaire, 1817

False scad
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Caranx rhonchus   AquaMaps   Data sources: GBIF OBIS
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Image of Caranx rhonchus (False scad)
Caranx rhonchus
Picture by Luyben, J.


Gambia country information

Common names: [No common name]
Occurrence: native
Salinity: brackish
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/ga.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Bauchot, M.-L., 1987
National Database:

Common names from other countries

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).

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

marien; brak water benthopelagisch; diepte 30 - 200 m (Ref. 27584), usually 30 - 50 m (Ref. 26999).   Subtropical; 15°C - 22°C (Ref. 57055); 39°N - 22°S, 19°W - 36°E

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Point map | Introducties | Faunafri

Eastern Atlantic: Morocco to Angola (Ref. 4225, 57392), including the Mediterranean along the African coast. Range reported to extend south to Namibia (Ref. 27121).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm ?, range 20 - ? cm
Max length : 60.0 cm TL mannelijk / geslacht onbekend; (Ref. 57392); common length : 35.0 cm TL mannelijk / geslacht onbekend; (Ref. 3397); max. gepubliceerd gewicht: 1.0 kg (Ref. 27584)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 9; Dorsale zachte stralen (totaal) : 28 - 32; Anale stekels: 3; Anale zachte stralen: 25 - 28. Diagnosis: body elongate and slightly compressed, its depth comprised from 3.8 to 4.4 times in fork length; eye posteriorly with a well developed adipose eyelid; 2 well separated dorsal fins, 1st with 8 spines, 2nd with 1 spine and 28-32 soft rays; anal fin with 2 detached spines, followed by 1 spine and 25-28 soft rays; last dorsal and anal ray transformed into a partially separate finlet, connected to the preceding ray by a low interradial membrane; pectoral fins short (comprised from 1.0 to 1.2 times in head length); scales small and cycloid; curved part of lateral line with 45-55 scales and 0-3 scutes, straight part with 0-8 scales and 24-32 scutes (Ref. 57392). Coloration: back brownish to olivaceous, sides light olivaceous to whitish; a narrow yellowish band sometimes extending from head to caudal-fin base; a black spot on upper margin of gill cover; a black blotch with a narrow light distal margin present on second dorsal-fin lobe (Ref. 57392).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Form schools. They occur frequently near the bottom, mostly in depths of 30 to 50 m. Also pelagic and found near the surface at times. Entering brackish-water lagoons and estuaries (Ref. 57392). Feed on small fish and invertebrates (Ref. 3195). Spawning grounds are located in shallow waters (Ref. 57055). Eggs are pelagic (Ref. 4233).

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

A partial spawner (Ref. 57055).

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

Smith-Vaniz, W.F., J.-C. Quéro and M. Desoutter, 1990. Carangidae. p. 729-755. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 7097)

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

  Niet bedreigd (LC) ; Date assessed: 10 May 2013

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless




Gebruik door de mens

Visserij: commercieel
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Meer informatie

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Estimates based on models

Preferred temperature (Ref. 115969): 16.2 - 25.6, mean 19.2 (based on 58 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01585 (0.01281 - 0.01961), b=2.94 (2.91 - 2.97), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.6   ±0.59 se; based on food items.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.16-0.3; Fec = 480,000).
Prior r = 0.32, 95% CL = 0.21 - 0.48, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (36 of 100).
Climate Vulnerability (Ref. 125649):  Low to moderate vulnerability (30 of 100).
Prijsklasse (Ref. 80766):   Low.