Invasion information | ||
Range in Japan | Hokkaido, Tokyo, Wakayama (Kumanogawa River System), and Chugoku District | |
Origin | California, USA. | |
Date | 1877 or later. | |
Route | Deliberate: For aquaculture and sports fishing. | |
Impact | Actually: Competition with native salmoid fishes. Eggs of salmoid fishes (such as white spotted char) are laid waste due to late oviposition of rainbow trout. In foreign country, competition and hybridization with other salmoid fishes and predation on crustaceans. Native organism(s) affected: Native salmoid fishes, freshwater insects and crustaceans, etc. | |
Regulation in Japan | Introduction of this species is prohibited in Shiga and Saga Pref. Capture of this species is regulated by several local governments. | |
Introduced range in other countries | Worldwide, Korean Peninsula, Pakistan, Sri Lanka, W Asia, C Asia, Europe, E & S Africa, Madagascar, Australia, New Zealand, Papua New Guinea, Canada, C & S America, Dominica, Hawaii, Azores Is., Madeira Is., Kerguelen Is., Reunion, etc. |
Reference | Notes |
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100 of the World’s Worst Invasive Alien Species, 100 of the Japan’s Worst Invasive Alien Species |