Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina; sötvatten; brackvatten bottenlevande; katadrom (Ref. 35893), usually ? - 1 m (Ref. 35893). Temperate; 5°C - 33°C (Ref. 56353); 41°N - 31°N
Asia: Japan.
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 30.0 cm SL hane/ej könsbestämd; (Ref. 56353)
Adults are found in the middle reaches of rivers during the summer; migrates downstream in autumn (Ref. 559). River bed consists of cobbles, boulders and gravel in riffles and sand and gravel in pools (Ref. 56353). Feed on fishes (Ref. 559). Juveniles migrate from the spawning ground in the sea to the middle reaches of rivers to grow (Ref. 56353).
Livscykel och parningsbeteende
Könsmognad | Reproduktion | Lek | Ägg | Fekunditet | Larver
From an aquarium observation, parental care is provided by the male which guarded and cared for the eggs until they hatch (Ref. 56353).
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell
Verktyg
Särskilda rapporter
Ladda ner XML
Internet-källor
Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00345 - 0.02005), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 4.2 ±0.73 se; based on food items.
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Fec = 15,000).
Sårbarhet i fisket (Ref.
59153): Low to moderate vulnerability (27 of 100).
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