Teleostei (teleosts) > Carangaria/misc
(Various families in series Carangaria) > Polynemidae
Etymology: Polynemus: Greek, poly = a lot of + Greek,nema = filament (Ref. 45335); aquilonaris: From the Latin for northern, in reference to the northern distribution (Indochina) of the species, compared with that of the related Polynemus dubius (Ref. 49954).
Environment: milieu / climate zone / depth range / distribution range
Freshwater; brackish; demersal. Tropical
Asia: Chao Phraya and Mekong River systems and from Lake Tonle Sap and related rivers.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.8 cm SL male/unsexed; (Ref. 49954)
soft rays: 11 - 13;
Vertebrae: 25. Eight first dorsal fin spines; 7 pectoral filaments, upper 2 filaments longer than TL; vomer with villiform teeth; orbit diameter 4% of SL; posterior portion of maxilla less than orbit diameter (Ref. 49954).
Found on sandy or muddy bottoms of freshwater rivers and estuaries (Ref. 49954). Feeds on small crustaceans, small fishes, and benthic organisms (Ref. 57343). Exported to Japan as an ornamental fish (Ref. 57343). Esteemed food fish in the Chao Phraya and Mekong rivers and at Tonle Sap Lake (Ref. 57343).
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. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00308 - 0.01483), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.56 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).