Environment: milieu / climate zone / depth range / distribution range
البيئة
; المياه العذبة القاع; غير مهاجرة. 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).
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 85.0 cm SL ذكر/ مختلط الجنس; (Ref. 44894); common length : 50.0 cm SL ذكر/ مختلط الجنس; (Ref. 5259); أعلا وزن تم نشرة: 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).
Life cycle and mating behavior
Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae
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)
IUCN Red List Status (Ref. 130435)
استخدامات بشرية
مصائد: فوائد محتملة; الأستزراع المائي: التجريبي; لعبة سمكه: نعم; حوض مائي: تجاري
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Phylogenetic diversity index (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).
مستوى غذائي (Ref.
69278): 4.0 ±0.60 se; based on food items.
المرونه (Ref.
120179): منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): High vulnerability (62 of 100).
