| Impact ID | 6732 |
| Impact Type | Disease/Parasite/Toxicity |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | In combination with other factors (e.g., overfishing and hybridization with more common cisco species), sea lamprey predation led to the extinction of the deepwater cisco (Coregonus johannae) and the decline of the blackfin cisco (C. nigripinnis), both endemic to the Great Lakes |
| Reference | 1225 |
| Cost | |
| Location | Great Lakes, USA |