| Ecosysteem | Type | Status | Ref. |
|---|---|---|---|
| Beli Vit | River (basin) | native | 59043 |
| Danube | River (basin) | endemic | 84350 |
| Jantra | River (basin) | native | 59043 |
| Kupa River | River (basin) | native | 59043 |
| Palearctic | Zoogeographic realm | endemic | 556 |
| Petrinj?ica River | River (basin) | native | 84350 |
| Sava River | River (basin) | native | 84350 |