Actinopterygii (ray-finned fishes) >
Perciformes (Perch-likes) >
Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335).
Environment / Climate / Range
Ecology
Marine; pelagic-oceanic; depth range 14 - 115 m (Ref. 40958). Tropical, preferred ?; 26°N - 15°S, 59°E - 74°E (Ref. 57343)
Western Indian Ocean: Arabian Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 19.0 cm SL male/unsexed; (Ref. 57343)
Short description
Morphology | Morphometrics
Dorsal
spines
(total): 9;
Dorsal
soft rays
(total): 12-13;
Anal
spines: 3;
Anal
soft rays: 11 - 12;
Vertebrae: 24. With 7 pectoral filaments; uppermost extending well beyond posterior tip of pectoral fin. Pectoral fin rays 19-22% of SL; all rays branched except uppermost 1 or 2. Well-developed swim bladder. A large black spot anteriorly on lateral line (Ref. 40958).
Feeds on shrimps and small fishes (Ref. 57343).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Motomura, H. and Y. Iwatsuki, 2001. Review of Polydactylus species (Perciformes: Polynemidae) characterized by a large black anterior lateral line spot, with descriptions of two new species. Ichthyol. Res. 48(4):337-354. (Ref. 40958)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: highly commercial
More information
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningFecundityEggsEgg development
Age/SizeGrowthLength-weightLength-lengthLength-frequenciesMorphometricsMorphologyLarvaeLarval dynamicsRecruitmentAbundance
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref.
93245).
Trophic Level (Ref.
69278): 3.9 ±0.66 se; Based on food items.
Resilience (Ref.
69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref.
59153): Low vulnerability (15 of 100) .