State watch
Illinois Snakehead
The USGS Nonindigenous Aquatic Species database records snakehead at 1 location in Illinois — these are reported or eradicated occurrences, not confirmed established populations. Confirm current status with your state wildlife agency.
Lake Michigan
lakeNorthern snakeheaderadicated
Documented northern snakehead water in Cook County, Illinois. Lake Michigan drainage. 1 USGS specimen record (2004); status: failed. Location verified from the USGS Nonindigenous Aquatic Species database.
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