Invasion information |
Range in Japan |
This species infested in Hyogo and Okinawa Prefs. in past. |
|
Origin |
Unknown. |
Date |
Introduction to Japan was around 1950. This species was introduced to Okinawa in middle 1970s, and infestation in a pond was recorded in 2006. |
Route |
Deliberate: For aquarium. |
Impact |
Potentially: Competition with native species. Nutrient enrichment. Native organism(s) affected: Native aquatic plants, crop plant (rice) |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
Australia, New Zealand, Southeast Asia, central Africa, etc. |