Australia country information

Common names: Bidyan, Bidyan grunter, Bidyan perch
Occurrence: endemic
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref:
Aquaculture: commercial | Ref: Arthington, A.H. and F. McKenzie, 1997
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Occur in the Murray-Darling system. The extensive spawning migrations of adults pose a fishery management problem. Access to upstream spawning areas may be blocked by high level dams or altered thermal regimes which might cause considerable drop in recruitment (Ref. 2906). Conservation status : vulnerable in Victoria (Ref. 48666). Also Ref. 7300.
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: Allen, G.R., S.H. Midgley and M. Allen, 2002
National Database:

Common names from other countries

银锯眶鯻(银鲈), Australischer Silberbarsch, Sølvaborre, ... more

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

> Centrarchiformes (Basses) > Terapontidae (Grunters or tigerperches)
Etymology: Bidyanus: A local name, "bidyani" in Australia, New South Wales.

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

; acqua dolce benthopelagico; potamodromo (Ref. 51243); distribuzione batimetrica 10 - ? m. Subtropical; 10°C - 30°C (Ref. 2060); 29°S - 35°S

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Oceania: known only from the Murray-Darling River system, Australia. Range boundaries: Chinchilla (on the Condamine River), South Queensland, Bonshaw (on the Dumaresq River), northeastern New South Wales, Albury (on the Murray River), southeastern New South Wales, Seven Creek and Goulburn River, South Victoria.

Length at first maturity / Size / Peso / Age

Maturity: L_m ?, range 34 - ? cm
Max length : 40.0 cm SL maschio/sesso non determinato; (Ref. 2906); common length : 30.0 cm SL maschio/sesso non determinato; (Ref. 44894); peso massimo pubblicato: 1.5 kg (Ref. 5259)

Adults are found in rivers, lakes and reservoirs, preferring fast-flowing waters of rapids and races and usually forming aggregations near the surface. Usually found below rapids and weirs (Ref. 44894). Feed on aquatic insects, mollusks, earthworms and plants. Temp.: 2-37°C. Maturity: F, 3 y and 34 cm SL; M, 23.3 cm SL. Spawning: summer (Nov.-Jan., 23-30°C water temp.), effect upstream migration. Fecundity: 500000 eggs per 1.8kg. Eggs: pelagic, 2.7-2.8 mm diameter. Hatching: 30 hrs at 26-27°C. Larvae: 3.6 mm at hatching. A good angling and food fish which has been increasingly utilized as an aquaculture species in farm dams throughout Australia (Ref. 44894).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Upstream spawning migration in summer to areas behind the peak of the flood. Spawning commences late in the afternoon from the surface to a depth of about 4 m, where there is a flow over a gravel, rock rubble substrate. Considerable spawning activity happens at the water surface. A single female circles slowly to the surface with her head deep and several males participate in courtship and finally in fertilization (Ref. 2906).

Main reference Upload your references | Bibliografia | Coordinatore | Collaboratori

Paxton, J.R., D.F. Hoese, G.R. Allen and J.E. Hanley, 1989. Pisces. Petromyzontidae to Carangidae. Zoological Catalogue of Australia, Vol. 7. Australian Government Publishing Service, Canberra, 665 p. (Ref. 7300)

IUCN Red List Status (Ref. 130435)

Near Threatened (NT) ; Date assessed: 13 February 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless (Ref. 2906)

Human uses

Pesca: commerciale; Acquacoltura: commerciale; Pesce da pesca sportiva: si

FAO(Acquacoltura: production; ; publication : search) | FishSource |

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
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Stocks
Ecologia
Dieta
Prede
Consumo di cibo
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Nomi Comuni
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Riproduzione
Maturità
Deposizione
Fecundity
Uova
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Age/Size
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Length-weight
Length-length
Length-frequencies
Morfometria
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Larve
Dinamica popolazioni larvali
Reclutamento
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Bibliografia
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Electrophoreses
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Collaboratori
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Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Fonti Internet

Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01660 (0.00638 - 0.04320), b=2.99 (2.76 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.0 ±0.34 se; based on food items.

Resilienza (Ref. 120179): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (tm=2-3).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (39 of 100).

Price category (Ref. 80766): Unknown.

Bidyanus bidyanus (Mitchell, 1838)