| Impact ID | 6787 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Perccottus glenii has threatened Umbra krameri (European mud minnow), a IUCN vulnerable species in Slovakia, through competition for resources and predation. |
| Reference | 35908 |
| Cost | |
| Location | Slovakia |