| Impact ID | 7744 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | When ruffe (Gymnocephalus cernua) first invaded Lake Superior, it was thought that this species could generate a considerable cost for recreational fishing, particularly by causing a decline in yellow perch (Perca flavescens) populations. |
| Reference | 33437 |
| Cost | |
| Location | Lake Superior |