| Impact ID | 4116 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Neogobius fluviatilis may also be responsible for the decline of Whitefin Gudgeon (Romonaogobio vladykovi) in the River Zagyva, Hungary due to predation |
| Reference | 35803 |
| Cost | |
| Location | River Zagyva, Hungary |