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Carangaria/misc (Various families in series Carangaria) >
Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335).
More on author: Gill.
Environment: milieu / climate zone / distribuzione batimetrica / distribution range
Ecologia
marino demersale; distribuzione batimetrica 10 - 60 m (Ref. 91172). Subtropical; 34°N - 7°S, 118°W - 77°W (Ref. 57343)
Eastern Pacific: Los Angeles Harbor in California, USA to off Paita, Peru; rare north of Baja California, Mexico.
Size / Peso / Age
Maturità: Lm ? range ? - ? cm
Max length : 50.0 cm TL maschio/sesso non determinato; (Ref. 55763); common length : 25.0 cm TL maschio/sesso non determinato; (Ref. 55763)
Spine dorsali (totale) : 9; Raggi dorsali molli (totale) : 11 - 13; Spine anali: 3; Raggi anali molli: 12 - 14. Body and fins yellowish; no stripes or spots. Anterior parts of lower jaw with villiform teeth extending onto lateral surface, adjacent part of lip poorly developed in large specimens. Vomerine teeth present. Maxilla covered with small deciduous scales. Pectoral filaments 9. Lateral line unbranched, extending to upper end of caudal fin lobe. Swim bladder absent (Ref. 45049).
Body shape (shape guide): fusiform / normal.
Inhabits coastal waters and estuaries, on sand and mud bottom (Ref. 9332). Also found along sandy beaches (Ref. 57343). Esteemed food fish in the tropical eastern Pacific (Ref. 57343).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Motomura, H., S. Kimura and Y. Iwatsuki, 2002. Revision of the threadfin genus Polydactylus (Perciformes, Polynemidae) from the eastern Pacific Ocean. Ichthyol. Res. 49(4):358-366. (Ref. 45049)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesca: scarso interesse commerciale
Strumenti
Special reports
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Fonti Internet
Estimates based on models
Preferred temperature (Fonte Biblio.
123201): 24.6 - 28.6, mean 27.2 °C (based on 32 cells).
Phylogenetic diversity index (Fonte Biblio.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00661 (0.00388 - 0.01125), b=3.07 (2.92 - 3.22), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Fonte Biblio.
69278): 3.3 ±0.51 se; based on food items.
Resilienza (Fonte Biblio.
120179): Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (40 of 100).
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