Papua New Guinea country information

Common names: Longfinned threadfin
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from the southern coast of the country (Ref. 57343). Common along the coast and delta areas. Found in Daru and the Gulf of Papua. Also Ref. 1585, 6192, 9685, 75154, 78751.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/pp.html
National Fisheries Authority: http://www.spc.org.nc/coastfish/Countries/PNG/png.htm
Occurrences: Occurrences Point map
Main Ref: Motomura, H., 2004
National Database:

Common names from other countries

Barbure gros-doigts, Barbudo de manos grandes, زعنفة رقيقة مَلَكْيَّة, ... more

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Carangaria/misc (Various families in series Carangaria) > Polynemidae (Threadfins)
Etymology: Polydactylus: Greek, poly = a lot of + greek, daktylos = finger (Ref. 45335).
More on author: Günther.

Environment: milieu / climate zone / depth range / distribution range Ecologia

marinhas; Água doce; estuarina demersal; catádromo (Ref. 51243); intervalo de profundidade 0 - 6 m (Ref. 57343). Tropical; 5°S - 28°S, 121°E - 154°E (Ref. 57343)

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Indo-West Pacific: southern New Guinea and northern Australia.

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 170 cm FL macho/indeterminado; (Ref. 6390); common length : 48.0 cm FL macho/indeterminado; (Ref. 9685); peso máx. Publicado: 45.0 kg (Ref. 9685); Idade máx. registada: 20 anos (Ref. 6390)

Descrição breve Morfologia | Morfometria

Body without spots nor stripes. Pectoral fin rays unbranched; 4th pectoral filament long, 40-53% of SL. Second spine of dorsal fin more robust than the rest. Posterior margin of maxilla extending considerably beyond level of posterior margin of adipose eyelid. Lower tip of 7th proximal pterygiophore of 1st dorsal fin directed backward. Lateral squamation on caudal fin unbranched (Ref. 40970).

Found in shallow, turbid waters coastal waters, estuaries, mangrove creeks, and mangrove-lined rivers (Ref. 57343), over sandbanks and mud substrates (Ref. 6390). Usually forms loose schools, although larger fish are more often observed in pairs or singly (Ref. 6390). Feeds on prawns and fish. Protandrous hermaphrodites.

Life cycle and mating behavior Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

King threadfin between 70 cm and 100 cm FL may be transitional hermaphrodites (they possess mature male and immature female reproductive tissue, and function as males (Ref. 28736)). However, most king threadfin less than 80 cm FL are males and most more than 95 cm FL are females (Ref. 28737). Transitional king threadfin are most often found in the months of June, July, August and September (Ref. 6390). There is little information on the larvae, although nursery areas are known to be inshore, shallow and of low salinity (Ref. 6390).

Referência principal Upload your references | Referências | Coordenador | Colaboradores

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)

Categoria na Lista Vermelha da IUCN (Ref. 130435)

Não avaliado

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless

Utilização humana

Pescarias: espécies comerciais; peixe desportivo: sim

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 24.8 - 28.9, mean 28 (based on 575 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00676 (0.00311 - 0.01469), b=3.10 (2.93 - 3.27), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 4.0 ±0.4 se; based on diet studies.

Resiliência (Ref. 120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tmax=20).

Fishing Vulnerability (Ref. 59153): High to very high vulnerability (66 of 100).

Categoria de preço (Ref. 80766): Very high.

Polydactylus macrochir (Günther, 1867)