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Caranx rhonchus GeoffroySaint-Hilaire, 1817

False scad
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Native range | All suitable habitat | Point map | Year 2050
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Caranx rhonchus   AquaMaps   Data sources: GBIF OBIS
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Image of Caranx rhonchus (False scad)
Caranx rhonchus
Picture by Luyben, J.

Common names from other countries

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | 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 Écologie

marin; saumâtre benthopélagique; profondeur 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

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | 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).

Length at first maturity / Taille / Poids / Âge

Maturity: Lm ?, range 20 - ? cm
Max length : 60.0 cm TL mâle / non sexé; (Ref. 57392); common length : 35.0 cm TL mâle / non sexé; (Ref. 3397); poids max. publié: 1.0 kg (Ref. 27584)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 9; Rayons mous dorsaux (Total) : 28 - 32; Épines anales: 3; Rayons mous anaux: 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     Glossaire (ex. 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).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

A partial spawner (Ref. 57055).

Référence principale Upload your references | Références | Coordinateur : Smith-Vaniz, William F. | Collaborateurs

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)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Préoccupation mineure (LC) ; Date assessed: 10 May 2013

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

Pêcheries: commercial
FAO(pêcheries: production; publication : search) | FIRMS (Stock assessments) | FishSource | Sea Around Us

Plus d'informations

Trophic ecology
Éléments du régime alimentaire
Diet compositions
Food consumptions
Food rations
Prédateurs
Ecology
Écologie
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Fréquences de longueurs
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larves
Dynamique des populations larvaires
Distribution
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Écosystèmes
Occurrences
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BRUVS - Videos
Anatomy
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Cerveaux
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Body compositions
Nutrients
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Type de nage
Swimming speeds
Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)
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Estimates based on models

Preferred temperature (Ref. 115969): 16.2 - 25.6, mean 19.2 (based on 58 cells).
Phylogenetic diversity index (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).
Niveau trophique (Ref. 69278):  3.6   ±0.59 se; based on food items.
Résilience (Ref. 120179):  Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (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).
Catégorie de prix (Ref. 80766):   Low.