Polydactylus sexfilis, Sixfinger threadfin : fisheries, aquaculture, gamefish, aquarium

Polydactylus sexfilis (Valenciennes 1831)

Sixfinger threadfin
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Polydactylus sexfilis   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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

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

; marina; sötvatten; brackvatten revassocierade; djupintervall 1 - 50 m (Ref. 57343), usually 20 - 50 m (Ref. 9685).   Tropical; 34°N - 23°S, 50°E - 148°W (Ref. 57343)

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

Indo-Pacific: mainly around oceanic islands. Known from Mauritius, Seychelles, Kenya and many islands of the northern Indian Ocean; then from Indonesia north to the Ryukyu, Ogasawara and Yaeyama islands and east to the Hawaiian Islands, French Polynesia and Pitcairn. Has not been collected in Australia (Ref. 57343).

Size / Vikt / Age

Maturity: Lm ?  range ? - ? cm
Max length : 61.0 cm TL hane/ej könsbestämd; (Ref. 4887); publicerad maxvikt: 3.2 kg (Ref. 4699)

Short description Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt): 9; Mjukstrålar i ryggfenan (totalt): 13; Taggstrålar i analfenan 3; Mjukstrålar i analfenan: 11. Body uniformly golden silver; occasionally with several faint dark stripes along longitudinal scale rows above and below lateral line. Pectoral filaments 6 with tip of uppermost filament reaching to or slightly beyond level of posterior tip of upper part of pectoral fin (Ref. 41110).

Biologi     Ordlista (t.ex. epibenthic)

This schooling species occurs along sandy and rocky shorelines and over sandy lagoon bottoms, often in zones of turbulence (Ref. 9685). Benthopelagic (Ref. 58302). Often encountered in river mouths or brackish mangrove estuaries. Feeds mainly on crustaceans (shrimps and crabs), polychaete worms, other benthic invertebrates; also on teleosts (Ref. 9685). A lunar spawning rhythm occurs close to shore (Ref. 9685). Sexual maturity in males occurs at 12 to 15 cm (Ref. 9685). Subsequently undergoes sex reversal passing through a hermaphroditic stage, and become female between 18 and 24 cm (Ref. 9685). The potential of this species for aquaculture has been studied (Ref. 9685).

Life cycle and mating behavior Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver

Main reference Upload your references | referenser | Koordinator | Medarbetare

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. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fiskeri: kommersiell; Vattenbruk: experimentell; sportfisk: ja; Akvarium: Kommersiell
FAO(Vattenbruk: produktion; ; publication : search) | FishSource | Sea Around Us

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Estimates based on models

Preferred temperature (Ref. 115969): 24.1 - 29, mean 27.9 °C (based on 1038 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01820 (0.01040 - 0.03184), b=3.11 (2.95 - 3.27), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisk nivå (Ref. 69278):  3.4   ±0.49 se; based on food items.
Resiliens (Ref. 120179):  Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Low to moderate vulnerability (33 of 100) .
Price category (Ref. 80766):   Very high.