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Sarcocheilichthys variegatus microoculus

Basic information
Scientific name Sarcocheilichthys variegatus microoculus

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Common names Biwa-higai
Higher taxon Cyprinidae, Cypriniformes, Actinopterygii
Natural range Biwako Lake and Setagawa River.
Habitat Lake and lower part of river.
Invasion information
Range in Japan Tohoku, Hokuriku, and Kanto District, Yamanashi, Nagano, Kochi, and Fukuoka Prefs. Range in Japan
Origin Biwako Lake, Japan.
Date 1912 and later. Introduction to Kasumigaura Lake (Ibaraki Pref.) was in 1918.
Route Accidental: Hitchhiking on seed release of ayu (Plecoglossus altivelis altivelis).
Deliberate: Released to Kasumigaura Lake in 1918 for fishery.
Impact Unknown impact.
Native organism(s) affected: Fishes.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries None.
Reference Notes
  • Froese & Pauly (eds) (2009) FishBase (Accessed on 2010-12-06)
  • Kurita et al. (2011) Appearance pattern of fishes in the Yamadagawa canal, the Ongagawa River at the northern part of Fukuoka, japan. Bull Biogeogr Soc Japan. 66, 183-193 (in Jpn with English abst)
  • Kawanabe et al. (eds) (2002) Freshwater Fishes of Japan, 3rd ed.. Yama-kei Publishers, Tokyo (in Jpn)
  • Matsuzawa & Senou (2008) Alien fishes of Japan. Bun-ichi Sogo Shuppan, Tokyo (in Jpn)
  • Yanai et al. (2008) The introduction process in alien fishes found from Lake Kasumigaura and Kitaura. Bull Ibaraki Pref Freshwater Fishery Exper St. 41, 47-54 (in Jpn)