| Impact ID | 8364 |
| Impact Type | Competition |
| Study Type | Observational |
| Study Location | Field |
| Impact Description | Yearling alewife directly compete with Cercopagis pengoi because they are planktivorous but cannot consume C. pengoi due to its caudal appendage. |
| Reference | 13830 |
| Cost | |
| Location | Lake Ontario, USA |