| Ecosystem | Type | Status | Ref. |
|---|---|---|---|
| Chilika Lake/Lagoon | Lagoon | native | 29108 |
| Choto Jamuna | River (basin) | native | 100698 |
| Ganges | River (basin) | native | 4833 |
| Nearctic | Zoogeographic realm | introduced | 1739 |
| Neotropical | Zoogeographic realm | introduced | 4833 |
| Oriental | Zoogeographic realm | endemic | 4833 |