| ລະບົບນິເວດ | ປະເພດ | ສະຖານະພາບ | ເອກະສານອ້າງອີງ |
|---|---|---|---|
| Amazon | River (basin) | native | 598 |
| Neotropical | Zoogeographic realm | endemic | 38270 |
| Orinoco | River (basin) | native | 38270 |
| Paraguay | River (basin) | native | 38270 |
| Paraná | River (basin) | native | 26076 |
| Uruguay | River (basin) | native | 38270 |