| Specimen ID | 40342 |
| Group | Fishes |
| Genus | Gymnocephalus |
| Species | cernua |
| Common Name | Ruffe |
| Country | Canada |
| State | ON |
| Locality | Lake Superior at Thunder Bay Harbor, Thunder Bay, Ontario |
| Mapping Accuracy | Approximate |
| HUC8 Name | Lake Superior |
| HUC8 Number | 04180000 |
| Map | |
| Collection Month | 10 |
| Collection Year | 1991 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Comments | Received this report from Jeff Slade, NBS, Ashland, WI. |
| Record Type | Personal communication |
| Verifier | Ontario Ministry of Natural Resources biologist |
| Freshwater/Marine | Freshwater |
| Number Collected | 6 |
