| Specimen ID | 35609 |
| Group | Fishes |
| Genus | Gymnocephalus |
| Species | cernua |
| Common Name | Ruffe |
| State | MI |
| County | Alpena |
| Locality | Thunder Bay, near Alpena, at LaFarge Cement Corp. near turning basin at dock |
| Mapping Accuracy | Accurate |
| HUC8 Name | Thunder Bay |
| HUC8 Number | 04070006 |
| HUC10 Name | Thunder Bay River |
| HUC10 Number | 0407000606 |
| HUC12 Name | Fall Creek-Thunder Bay River |
| HUC12 Number | 040700060605 |
| Map | |
| Collection Day | 27 |
| Collection Month | 8 |
| Collection Year | 1998 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Comments | Female mature. |
| Record Type | Personal communication |
| Disposal | frozen |
| Verifier | U.S. Fish and Wildlife Service, Alpena, MI |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
| Year Class | adult |
| Size | 129 mm |
