Cynoscion leiarchus, Smooth weakfish : fisheries, gamefish

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Cynoscion leiarchus (Cuvier, 1830)

Smooth weakfish
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This map was computer-generated and has not yet been reviewed.
Cynoscion leiarchus   AquaMaps   Data sources: GBIF OBIS
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Image of Cynoscion leiarchus (Smooth weakfish)
Cynoscion leiarchus
Picture by Carvalho Filho, A.

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> Eupercaria/misc (Various families in series Eupercaria) > Sciaenidae (Drums or croakers)
Etymology: Cynoscion: Greek, kyon = dog + Greek, odous = teeth + Greek, skion, skiaina = barbel, red mullet (Ref. 45335).
More on author: Cuvier.

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

marien; brak water demersaal; diepte 10 - 50 m (Ref. 9626), usually ? - 25 m (Ref. 9626). Tropical; 14°N - 27°S, 83°W - 34°W

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Western Atlantic: Panama to Santos, Brazil. Also reported in Nicaragua (Ref. 13613).

Grootte / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 90.8 cm TL mannelijk / geslacht onbekend; (Ref. 9626); common length : 35.0 cm TL mannelijk / geslacht onbekend; (Ref. 3702); max. gepubliceerd gewicht: 2.0 kg (Ref. 5217)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 11; Dorsale zachte stralen (totaal): 20-24; Anale stekels 2; Anale zachte stralen: 8 - 10. Silvery bluish on back, often with greenish reflections. Whitish on belly. Upper sides sometimes with inconspicuous minute dark dots. Soft portion of dorsal fin and caudal fin edged with black, pelvic and anal fins yellowish. Inside of opercle dark, visible externally. Mouth large, pointed, lower jaw projecting. Upper jaw with a pair of large canine-teeth at tip. Chin without barbel or obvious pores. Snout with 2 marginal pores. Gas bladder with a pair of curved, horn-like anterior appendages. Scales small, all cycloid (smooth). Soft dorsal-fin base with 1 or 2 rows of scales along its base (Ref 51721).

Biologie     Verklarende woordenlijst (bv. epibenthic)

Found over mud and sand bottoms in river estuaries. Occurs up to 50 m but usually less than 25 m (Ref. 9626). Marketed fresh and salted.

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Hoofdreferentie Upload your references | Referenties | Coördinator | Medewerkers

Cervigón, F., 1993. Los peces marinos de Venezuela. Volume 2. Fundación Científica Los Roques, Caracas,Venezuela. 497 p. (Ref. 9626)

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

  Niet bedreigd (LC) ; Date assessed: 11 October 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: commercieel; sportvis: ja
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Estimates based on models

Preferred temperature (Ref. 123201): 24.8 - 27.9, mean 27.3 °C (based on 60 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00509 - 0.01238), b=3.07 (2.95 - 3.19), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.1   ±0.40 se; based on food items.
Generation time: 3.1 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (37 of 100).
Prijsklasse (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 93.2 [57.6, 183.3] mg/100g; Iron = 0.965 [0.503, 1.639] mg/100g; Protein = 18.3 [16.7, 20.0] %; Omega3 = 0.195 [0.107, 0.317] g/100g; Selenium = 64.8 [36.2, 121.6] μg/100g; VitaminA = 10.7 [4.4, 26.2] μg/100g; Zinc = 1.17 [0.86, 1.67] mg/100g (wet weight); based on nutrient studies.