| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Acre | River (basin) | native | 97592 |
| Amazon | River (basin) | native | 26543 |
| Magdalena | River (basin) | native | 26543 |
| Neotropical | Zoogeographic realm | endemic | 39524 |
| Orinoco | River (basin) | native | 26543 |
| Paraná | River (basin) | native | 27745 |
| Uruguay | River (basin) | native | 56308 |