Invasion information |
Range in Japan |
Chiba, Kanagawa, Shizuoka, Shiga, Kyoto, Osaka, Hyogo, Fukuoka, Saga, Kumamoto, Kagoshima, and Okinawa Prefs. |
|
Origin |
Unknown. |
Date |
The first record in Japan was in 1989 at Amagasaki, Hyogo Pref. |
Route |
Deliberate: Escape of aquarium ornament. |
Impact |
Competition with native species. Disturbance of boat operation. Native organism(s) affected: Native aquatic plants |
Regulation in Japan |
Import, transport and keeping are legally restricted in Japan. |
Introduced range in other countries |
Taiwan, Australia, Libya, USA, etc. |