Environment: milieu / climate zone / depth range / distribution range
Ecologie
; zoet water demersaal; standvastig. Temperate; 18°C - 28°C (Ref. 2060); 32°S - 36°S
Oceania: Murray-Darling basin, New South Wales, Australia - Mitta Mitta River, upper Murray River (Tintaldra, Mulwala area-Ref. 2906), MurrumbidgeeRiver, Cataract Dam (NepeanRiver), also in the Macquarie River (Ref. 2906). Stocked population in Seven Creeks River and Glenbawm Dam (HunterRiver) (Ref. 2906); also in Lake Sambell (Ref. 6071).
Grootte / Gewicht / Leeftijd
Maturity: Lm ? range ? - ? cm
Max length : 85.0 cm SL mannelijk / geslacht onbekend; (Ref. 44894); common length : 50.0 cm SL mannelijk / geslacht onbekend; (Ref. 5259); max. gepubliceerd gewicht: 16.0 kg (Ref. 26161)
Occur from riffle and boulder areas in relatively small upland streams to larger deeper rivers with sand and clay substrates and submerged timber and snags (Ref. 26161, 44894). Found in still and fast-flowing waters (14°-28°C), usually over bedrock, boulder and gravel bottoms of streams. Large fish confined to deep holes between falls and rapids, while small ones are found among boulders. Feed on insects, crayfish, shrimp, and small fishes; cannibalism occurs. Spawn in spring and early summer. The large, adhesive eggs are laid on hard surfaces. Hatching occurs in 5-10 days at 20°C. Sexual maturity is attained at 3-5 years of age (Ref. 44894). Territorial juveniles. Infected by parasitic protozoan Chilodonella cyprini; susceptible to `ich' & Saprolegnia infections. Protected by law and its capture is strictly prohibited. Known to hybridize with closely related Murray (Ref. 44894).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
The demersal and adhesive eggs (2.5-3.6 mm in diameter) are laid onto a hard surface. Hatching starts 5 days after fertilization and continues for up to 10 days at around 20°C.
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)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gebruik door de mens
Visserij: van potentieel belang; Aquacultuur: experimenteel; sportvis: ja; Aquarium: Commercieel
Tools
Speciale rapporten
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Estimates based on models
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01072 (0.00408 - 0.02815), b=3.01 (2.79 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 4.0 ±0.60 se; based on food items.
Weerstandsvermogen (Ref.
120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): High vulnerability (62 of 100).
