| Impact ID | 6842 |
| Impact Type | Genetic |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Hybrids of roach (Rutilus rutilus) and rudd (Scardinius erythrophthalmus) were recorded in Lough Melvin, Ireland in 2002. |
| Reference | 33570 |
| Cost | |
| Location | Lough Melvin, Ireland |