Invasion information |
Range in Japan |
Fukushima, Tochigi, Nagano, Shiga, Nara |
|
Origin |
North America |
Date |
The first observation of establishment of this species was early 1990s. Although the first introduction of this species to Japan was in 1925 along with Micropterus salmoides to Lake Ashinoko, the first population could not be establshed. |
Route |
Deliberate: Illegal introduction for sports fishing |
Impact |
Predation, competition against native species. Damages on fishery. This species can be established in upper part of rivers compared with M. salmoides. Native organism(s) affected: Freshwater fishes and invertebrates. |
Regulation in Japan |
Import, transport and keeping are prohibited in Japan by the Invasive Alien Species Act. |
Introduced range in other countries |
Slovakia, Belgium, Germany, Tanzania, South Africa, Canada, Mexico, Belize, Hawaii |