Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
marino; salmastro demersale; oceanodromo (Ref. 51243); distribuzione batimetrica 10 - ? m. Subtropical; 46°N - 51°S
Western Atlantic: Nova Scotia (Ref. 7251) to Florida, Gulf of Mexico, the Antilles (uncommon), and the southern Caribbean coast; also from the Orinoco delta to Argentina.
Length at first maturity / Size / Peso / Age
Maturità: Lm 64.5, range 63 - ? cm
Max length : 170 cm TL maschio/sesso non determinato; (Ref. 7251); common length : 50.0 cm TL maschio/sesso non determinato; (Ref. 3702); peso massimo pubblicato: 51.3 kg (Ref. 4699); Età massima riportata: 43 anni (Ref. 7188)
Spine dorsali (totale) : 11; Raggi dorsali molli (totale) : 19 - 22; Spine anali: 2; Raggi anali molli: 5 - 7. Silvery grey to very dark, young with 4 or 5 black vertical bars on sides, disappearing with growth; pelvic and anal fins usually dark. Chin with 5 pores and 10 to 13 pairs of small barbels along median edges of lower jaws and subopercles, increasing in length posteriorly. Gas bladder with numerous lateral appendages interconnected in a complicated pattern in adult. Sagitta semicircular and moderately thin (Ref 51721).
Body shape (shape guide): fusiform / normal.
Found usually over sand and sandy mud bottoms in coastal waters, especially in areas with large river runoffs. Juveniles often enter estuaries. Feeds mainly on crustaceans, mollusks and fishes.
Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesca: commerciale; Pesce da pesca sportiva: si; Acquario: Acquari pubblici
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Preferred temperature (Fonte Biblio.
123201): 10.8 - 27.6, mean 23.5 °C (based on 326 cells).
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00757 - 0.00914), b=3.08 (3.06 - 3.10), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.4 ±0.5 se; based on diet studies.
Resilienza (Fonte Biblio.
120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (K=0.17; tm=3-5; tmax=43).
Fishing Vulnerability (Ref.
59153): High vulnerability (60 of 100).
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Climate Vulnerability (Ref.
125649): Moderate to high vulnerability (54 of 100).
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Nutrients (Ref.
124155): Calcium = 38.1 [22.4, 72.3] mg/100g; Iron = 0.803 [0.422, 1.361] mg/100g; Protein = 19.7 [18.0, 21.7] %; Omega3 = 0.289 [0.175, 0.459] g/100g; Selenium = 37.5 [20.9, 71.1] μg/100g; VitaminA = 4.98 [1.88, 15.13] μg/100g; Zinc = 0.611 [0.443, 0.888] mg/100g (wet weight); based on
nutrient studies.
