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> Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Etymology: Oncorhynchus: Greek, onyx, -ychos = nail + Greek, rhyngchos = snout (Ref. 45335).
More on authors: Jordan & McGregor.

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

; zoet water benthopelagisch; diepte 38 - 180 m (Ref. 87053), usually 90 - ? m (Ref. 87053). Temperate; 4°C - 13°C (Ref. 87053)

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Asia: endemic to Lake Tazawa in Akita Prefecture, Japan. Believed to have become extinct since 1940. Recently discovered in 2010 from Lake Saiko, Yamanashi Prefecture, one of the lakes where eyed eggs of this species were introduced in 1935.

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 23.3 cm SL mannelijk / geslacht onbekend; (Ref. 87053)

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Presence of 47-62 pyloric caeca and 37-43 gill rakes (Ref. 87053).

Probably feeds on mesopelagic or benthopelagic zooplankton (Ref. 87053)

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Nakabo, T., K. Nakayama, N. Muto and M. Miyazawa, 2011. Oncorhynchus kawamurae "Kunimasu," a deepwater trout, discovered in Lake Saiko, 70 years after extinction in the original habitat, Lake Tazawa, Japan. Ichthyol. Res. 58(2):180-183. (Ref. 87053)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Uitgestorven in het wild (EW) ; Date assessed: 07 December 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01047 (0.00482 - 0.02276), b=3.04 (2.87 - 3.21), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 3.6 ±0.4 se; based on size and trophs of closest relatives

Weerstandsvermogen (Ref. 120179): Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (18 of 100).

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Oncorhynchus kawamurae Jordan & McGregor, 1925