| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Bagmati | River (basin) | native | 40948 |
| Cauvery | River (basin) | native | 43636 |
| Chilika Lake/Lagoon | Lagoon | native | 95460 |
| Ganges | River (basin) | native | 33084 |
| Karnali | River (basin) | native | 40948 |
| Kosi | River (basin) | native | 40948 |
| Krishna River | River (basin) | native | 4832 |
| Nearctic | Zoogeographic realm | introduced | 13364 |
| Neotropical | Zoogeographic realm | introduced | 41236 |
| Oriental | Zoogeographic realm | questionable | 4832 |
| Sarbhang Khola | River (basin) | native | 40882 |