| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Amazon | River (basin) | native | 4537 |
| Iguazú River | River (basin) | native | 56308 |
| Neotropical | Zoogeographic realm | endemic | 36506 |
| Paraná | River (basin) | native | 56308 |
| São Francisco | River (basin) | native | 36506 |
| Uruguay | River (basin) | native | 79585 |