We received notice from the DNR that the "wildcard" photo is incorrect. They noted that this photo is NOT a rusty crayfish as was originally noted but more likely a calico crayfish, Faxonius immunis, due to the hairs at the hinge of the claws. See attached Wisconsin Crayfish guild which explains more.
2020 Crayfish of Wisconsin Guide
Also go to our "Fishery" page to see actual photos of crayfish from Round Lake and see if you can guess what we have in our lake before we give you the answers on 2020-12-20!