The round goby has dramatically altered Great Lake food webs since it was first discovered in Lake St. Clair in 1990. But the aggressive invasive has spread beyond the blue borders of our Great Lakes. What might gobies mean for the tributaries and streams they are now colonizing? The UW Sea Grant Institute put together this video of the CFL’s Jake Vander Zanden and his (then) grad student, Matt Kornis, as they set out to answer that question.