I don’t know where the Kegonasa chain is, but if it is not near anywhere marked in red on this map http://nas.er.usgs.gov/queries/SpFactSheet.asp?speciesID=713
then that might be a significant jump from where the fish have been found before. If the fish is turned in to the DNR, and it is verified to be a round goby, then please encourage them to report the fish to the USGS at the above link. Note that some sculpins look a lot like round gobies. Round gobies are BAD. I just was at a presentation describing how they have had to institute season including no tournament fishing, even catch and release, on smallmouth in Lake Erie because of the gobies. Seems the little devils love smallmouth eggs, and when you catch a smallie off a nest they move in by the hundreds within just a very few minutes to clean off the nest. Thus, no more fishing for smallies during the nesting season. Before the gobies, a captured and released smallie would usually get back to the nest before anything much happened. But with the density of egg-eating gobies in shallow water in Lake Erie, even a short time off the nest is too long.