Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Polynemidae
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; demersal. Tropical; 29°N - 25°S, 81°W - 34°W (Ref. 57343)
Western Atlantic: southern Florida to Santos, Brazil. Not occurring in the Gulf of Mexico and western Caribbean Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 46.0 cm TL male/unsexed; (Ref. 7251); common length : 25.0 cm TL male/unsexed; (Ref. 3796); max. published weight: 620.00 g (Ref. 40637)
Occurs along sandy or muddy shores (Ref. 7251). Not of great commercial importance (Ref. 26938).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Motomura, H., 2004. Threadfins of the world (Family Polynemidae). An annotated and illustrated catalogue of polynemid species known to date. FAO Spec. Cat. Fish. Purp. Rome: FAO. 3:117 p. (Ref. 57343)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 118484)
Threat to humans
Fisheries: minor commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 26.1 - 28, mean 27.3 (based on 118 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00525 (0.00276 - 0.00996), b=3.11 (2.93 - 3.29), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic Level (Ref. 69278
): 3.7 ±0.5 se; Based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (27 of 100) .