| Impact ID | 6780 |
| Impact Type | Disease/Parasite/Toxicity |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Perccottus glenii introduced the monogenean parasite Gyrodactylus perccotti into Europe. |
| Reference | 34995 |
| Cost | |
| Location | Wloclawski Reservoir, Poland |