| Impact ID | 4261 |
| Impact Type | Predation/Herbivory |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | In New Zealand, Eurasian perch suppressed populations of a native fish, the common bully (Gobiomorphus cotidianus), by direct predation |
| Reference | 36197 |
| Cost | |
| Location | New Zealand |