| Impact ID | 6736 |
| Impact Type | Recreation |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Besides causing declines of lake trout Salvelinus namaycush, and walleye Stizostedion vitreum, sea lamprey also took a toll on the introduced salmon in the Great Lakes, harming anglers and state fish agencies |
| Reference | 870 |
| Cost | |
| Location | Great Lakes, USA |