Environment: milieu / climate zone / depth range / distribution range
Ecologie
; marien; zoetwater; brakwater demersaal; katadroom (Ref. 51243). Subtropical; 34°S - 47°S
Southwest Pacific: endemic to New Zealand.
Length at first maturity / Size / Gewicht / Leeftijd
Maturity: Lm ?, range 80 - ? cm
Max length : 185 cm TL mannelijk/geslacht niet bekend; (Ref. 44724); 156.0 cm TL (female); common length : 60.0 cm TL mannelijk/geslacht niet bekend; (Ref. 9258); common length :100 cm TL (female); Maximaal gepubliceerd gewicht: 25.0 kg (Ref. 11115)
Commonly found in lakes and rivers (Ref. 9258). Inhabits stony rivers (Ref. 9072). Migrates to the sea to breed. Oviparous (Ref. 205). Marketed fresh, smoked and frozen; eaten fried and broiled (Ref. 9988). Reports of reaching up to 2 meters and 50 kilograms are rare and more common historically; in recent times, only a few exceed 120 cm TL (Ref. 82796).
Life cycle and mating behavior
Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven
Armitage, R.O., D.A. Payne, G.J. Lockley, H.M. Currie, R.L. Colban, B.G. Lamb and L.J. Paul (eds.), 1994. Guide book to New Zealand commercial fish species. Revised edition. New Zealand Fishing Industry Board, Wellington, New Zealand, 216 p. (Ref. 9258)
Status op de Rode Lijst van het IUCN (Ref. 125652)
Gevaarlijk voor mensen
Harmless
Gebruik door de mens
Visserij: commercieel; Aquacultuur: experimenteel
Meer informatie
ReferentiesAquacultuurAquacultuurprofielKweeklijnenGeneticaAlleelfrequentiesErfelijkheidZiektenVerwerkingNutrientsMass conversion
Tools
Speciale rapporten
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Estimates based on models
Preferred temperature (Ref.
115969): 10.6 - 18.3, mean 15.1 °C (based on 138 cells).
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00093 (0.00076 - 0.00115), b=3.20 (3.15 - 3.25), in cm total length, based on LWR estimates for this species (Ref.
93245).
Trophic level (Ref.
69278): 4.5 ±0.5 se; based on diet studies.
Weerstandsvermogen (Ref.
120179): zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Tmax=60; tm=10-48 years based on age-length relationship.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (89 of 100) .
Climate Vulnerability (Ref.
125649): (0 of 100) .