Australia country information

Common names: Blind salmon, Blink tassel-fish, Burnett salmon
Occurrence: native
Salinity: freshwater
Abundance: abundant (always seen in some numbers) | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Importance: commercial | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Aquaculture: never/rarely | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Regulations: restricted | Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
Uses: gamefish: yes;
Comments: Present from about Broome in Western Australia to the Noosa River in southern Queensland (Ref. 6390). Adults and juveniles taken in Trinity Inlet system at Cairns, Queensland (Ref. 9685). Stock structure: Distinct stocks are present in the Gulf of Carpentaria and the east coast of Queensland (Williams 1997). Commercial fishery: Threadfin salmon are fished in the north of Western Australia, in the Northern Territory and in Queensland. In Western Australia they are fished all year from about 19°S northwards. In the Northern Territory, threadfin salmon comprise approximately 30% of the total landings of the barramundi, Lates calcarifer, fishery. There, only licensed barramundi fishers may take king threadfin. King threadfin form part of a multi-species fishery (which includes barramundi) on the Queensland east coast from about Lloyd Bay southwards and in the Gulf of Carpentaria; although the landings vary between regions. In the southern Gulf of Carpentaria, king threadfin are more commonly harvested; and the catch per unit effort for king threadfin is 5 times higher on the east coast south of about Mackay than it is between Mackay and Cairns (Ref. 27247). From the Gulf of Carpentaria gillnet fishery between 1980 and 1987, king threadfin averaged 30% by weight of total landings. Gulf of Carpentaria catches increased in 1993 and then declined (Williams, 1997). In terms of value to the inshore fishery in Queensland, king threadfin are second only to barramundi and form the main bycatch of the barramundi fishery. Especially in the Gulf of Carpentaria, king threadfin provide the basis for the foreshore fishery. Threadfin salmon are important during the late dry season cooler months (about June to September), while barramundi tend to dominate the river catches at other times. On the east Queensland coast, king threadfin are caught throughout the year, exhibiting greater catch rates during winter months (May to July) (Ref. 28736, 27247). Threadfin salmon are caught mainly by coastal set gillnets, but also by fixed tidal traps, beach seines and ring nets, over sandbanks offshore or onshore, or in the mouths of rivers on tidal mud flats. In the southern Gulf of Carpentaria, the fishery for king threadfin is largely based on male 3-6-year-old fish. Typically, threadfin salmon are marketed as fillets, either fresh and chilled on ice or frozen. They are shipped interstate or consumed locally. On the east Queensland coast south of Port Douglas and near Darwin in the Northern Territory, king threadfin are often wholesaled as gilled and gutted whole fish, but in the Gulf of Carpentaria, the fishery is for fillets only. In the Northern Territory, threadfin salmon is used largely in the 'fish-and chips' trade. King threadfin especially, fetch high prices and were frequently sold as 'barramundi B'. Recreational fishery: Threadfin salmon are important sport fish. They are caught with rod-and-reel or handlines, from shore or boat. Live or very fresh baits of oily fish, prawns or crabs as well as lures are used. The recreational fishing record up to 1993 for a threadfin salmon was 13.6 kg from Queensland (Australian Anglers Association records). Resource status: Fluctuations in catch rates of king threadfin generally mirror those for barramundi, but in central Queensland over recent years the catch rate of king threadfin compared with that of barramundi has dropped (Ref. 3479). In 1993, threadfin salmon appeared to be fully exploited on the east coast but catches were increasing in the Gulf of Carpentaria as better prices were being offered. By 1997, fish numbers in the Gulf of Carpentaria and the east coast of Queensland had declined (Williams 1997).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Kailola, P.J., M.J. Williams, P.C. Stewart, R.E. Reichelt, A. McNee and C. Grieve, 1993
National Database:

Common names from other countries

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

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > 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 Ecology

Marine; freshwater; brackish; demersal; catadromous (Ref. 51243); depth range 0 - 6 m (Ref. 57343). Tropical; 5°S - 28°S, 121°E - 154°E (Ref. 57343)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 170 cm FL male/unsexed; (Ref. 6390); common length : 48.0 cm FL male/unsexed; (Ref. 9685); max. published weight: 45.0 kg (Ref. 9685); max. reported age: 20 years (Ref. 6390)

Short description Morphology | Morphometrics

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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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).

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435)

Not Evaluated

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: commercial; gamefish: yes

FAO(Publication : search) | FishSource |

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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).

Trophic level (Ref. 69278): 4.0 ±0.4 se; based on diet studies.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (tmax=20).

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

Price category (Ref. 80766): Very high.

Polydactylus macrochir (Günther, 1867)

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

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

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Size / Weight / Age

Short description Morphology | Morphometrics

Biology Glossary (e.g. epibenthic)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

IUCN Red List Status (Ref. 130435)

CITES (Ref. 128078)

CMS (Ref. 116361)

Threat to humans

Human uses

More information

Tools

Special reports

Download XML

Internet sources

Estimates based on models