| Specimen ID | 1633020 |
| Group | Fishes |
| Genus | Gymnocephalus |
| Species | cernua |
| Common Name | Ruffe |
| Country | Canada |
| State | ON |
| Locality | Lake Superior, Batchewana Bay |
| Mapping Accuracy | Accurate |
| HUC8 Name | Lake Superior |
| HUC8 Number | 04180000 |
| HUC10 Name | Lake Superior |
| HUC10 Number | 0418000002 |
| HUC12 Name | Lake Superior |
| HUC12 Number | 041800000200 |
| Map | |
| Collection Day | 5 |
| Collection Month | 10 |
| Collection Year | 2019 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water | dispersed |
| Status | established |
| Comments | Caught October 5,7, and 8, 2019. One fish each day. |
| Record Type | Personal communication |
| Verifier | Ontario Ministry of Natural Resources and Forestry |
| Freshwater/Marine | Freshwater |
| Number Collected | 3 |
| Size | 179, 180, 185 mm TL |
| Photo | |
