| Impact ID | 9458 |
| Impact Type | Biocontrol |
| Study Type | Anecdotal |
| Study Location | N/A |
| Impact Description | Residents in Wisconsin have noticed a great decline in the number of aquatic weed beds in the area ever since the rusty crayfish population began to reach a tremendous size. |
| Reference | 1896 |
| Cost | |
| Location | |