I think people have overestimated the gobies effect on walleyes out the gate. I fished through their introduction on Lake Ontario when the gobies boomed at first and the fish didn't eat them. It took a few years for nature to even out and begin feeding on them. Perch seemed to quickly but walleyes on the lake and the river took awhile. Now that they've adapted years later the walleyes seem to love the gobies and be one of their main sources of food. They're affecting the fishing but in terms of creating a different walleye on Oneida it's going to take awhile. I'm no scientist just my opinion based on fishing Lake Ontario and the St. Lawrence