| Hệ sinh thái | Dạng (Kiểu) | Hiện trạng | Tài liệu tham khảo |
|---|---|---|---|
| Amazon | River (basin) | native | 6329 |
| Iguazú River | River (basin) | native | 56308 |
| Neotropical | Zoogeographic realm | endemic | 36801 |
| Paraguay | River (basin) | native | 36801 |
| Paraná | River (basin) | native | 56308 |
| Uruguay | River (basin) | native | 79585 |