| Specimen ID | 35623 |
| Group | Fishes |
| Genus | Gymnocephalus |
| Species | cernua |
| Common Name | Ruffe |
| State | MI |
| County | Alpena |
| Locality | Thunder Bay River (~0.5-1 mi from the mouth) |
| 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 | 21 |
| Collection Month | 4 |
| Collection Year | 1999 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Record Type | Personal communication |
| Disposal | frozen |
| Museum Cat Number | USFWS-Alpena, MI |
| Verifier | Anjie Hintz, U.S. Fish and Wildlife Service |
| Freshwater/Marine | Freshwater |
| Number Collected | 2 |
| Year Class | adult |
| Size | 113, 154 mm |
