The White Perch (Morone americana) is on its way to Lake Winnebago (perhaps for a vacay?), according to this article from the Wisconsin Post-Crescent. Scientists have found several young perch upstream from the lake, and expect the fish to continue their path upriver. The perch will likely be used as evidence of the dangers of introducing invasive species in the ongoing battle against Wisconsin state officials, who have made plans to open up locks on the Fox River to allow boat traffic through. White perch are native to the Atlantic Coast of the U.S., but have worked their way inland via human-built canals.