| Impact ID | 6086 |
| Impact Type | Commerce |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Through predation of yellow perch and EMS effects on lake trout, alewife (Alosa pseudoharengus) has negatively affected commercial fisheries in the lower four Great Lakes. |
| Reference | 24212 |
| Cost | |
| Location | Lake Ontario, USA |