Neogobius melanostomus
•Muskegon River, Michigan in 1999
•Lake Huron, Severn Sound, Ontario in 1999
•Maumee River, Ohio in 1999
•Bay of Quinte, Ontario in 1999
•Lake Erie, Crystal Beach, Ontario in 2000
•Des Planes River, Illinois (RM 285) in 2000
•Lake Charlevoix, Michigan in 2000
•Erie Canal (Tonawanda Creek portion in 2001)
•Saginaw Bay, Michigan 2001
•Lake Ontario, Rochester Harbor in 2001
•Green Bay (Lake Michigan) in 2001
•Lake Huron at Port Dolomite, Michigan in 2002 •Au Sable River, Michigan at Foote Dam in 2002
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David Jude
The round goby.  Here is list of some of the more recent observations that I have included.  I don’t believe they have expanded their range beyond this boundary, but more are filling in gaps between known established populations.