| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Cauvery | River (basin) | native | 43636 |
| Chalakudy River | River (basin) | native | 45207 |
| Chittar River | River (basin) | native | 44312 |
| Godavari | River (basin) | native | 43636 |
| Krishna River | River (basin) | native | 41236 |
| Oriental | Zoogeographic realm | endemic | 41236 |