| Impact ID | 2721 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | Field |
| Impact Description | If blueback herring became established throughout Lake Ontario and/or spread to other Great Lakes it
could impede recovery of depressed populations of native fishes such as cisco and lake trout. |
| Reference | 14488 |
| Cost | |
| Location | Oneda-Oswago River, USA |