| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Colorado River | River (basin) | introduced | 26870 |
| Mackenzie | River (basin) | native | 78982 |
| Mississippi River | River (basin) | native | 78789 |
| Missouri River | River (basin) | native | 78789 |
| Nearctic | Zoogeographic realm | endemic | 5723 |
| Nelson-Saskatchewan | River (basin) | native | 78981 |
| Neotropical | Zoogeographic realm | introduced | 27158 |
| Palearctic | Zoogeographic realm | introduced | 5723 |
| Rio Grande | River (basin) | native | 78807 |