| Invasion information |
| Range in Japan |
Nagano and Shizuoka Pref. (Suwako Lake and Tenryugawa River System). |
|
| Origin |
Within Japan. |
| Date |
Unknown. |
| Route |
Accidental: Hitchhiking on introduction of bivalves (Cristaria plicata) as oviposition site for the bitterlings. |
| Impact |
Competition with native bitterlings in oviposition site bivalves. Native organism(s) affected: Native bitterling species. |
| Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
| Introduced range in other countries |
None. |