| Impact ID | 4119 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Neogobius fluviatilis nearly extirpated the Carpathian Gudgeon (Carpathian Gudgeon) in only two years after their invasion in the Eger river, Hungary |
| Reference | 35807 |
| Cost | |
| Location | Eger river, Hungary |