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  3. Biwia zezera

Biwia zezera

Basic information
Scientific name Biwia zezera (No picture)
Common names Zezera
Higher taxon Cyprinidae, Cypriniformes, Actinopterygii
Natural range The Nobi Plain, Biwako-Yodogawa River System, Sanyo area and NW Kyushu.
Habitat Lower part of river and lowland lakes and ponds.
Invasion information
Range in Japan Kanto District, Niigata Pref., and NW Kyushu. Range in Japan
Origin Biwako Lake, Japan.
Date Unknown. In Kasumigaura Lake, Ibaraki Pref., occur since 1960.
Route Accidental: Hitchhiking on seed release of ayu (Plecoglossus altivelis altivelis).
Impact Hybridization with native conspecific population in NW Kyushu. Unknown impact in other region.
Affected organism: Native population of B. zezera
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) http://www.fishbase.org/search.cfm
  • 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)