| Impact ID | 6127 |
| Impact Type | Competition |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | In the hatchery bay, the establishment of Echinogammarus ischnus and displacement of Gammarus fasciatus in dreissenid and macrophyte areas suggest competitive displacement. |
| Reference | 16365 |
| Cost | |
| Location | Hatchery Bay, Lake Erie, USA |