| Specimen ID | 238688 |
| Group | Fishes |
| Genus | Gymnocephalus |
| Species | cernua |
| Common Name | Ruffe |
| State | MI |
| County | Houghton |
| Locality | Keweenaw Waterway (South Entry - Portage Lake) [S of Houghton, MI] |
| Mapping Accuracy | Accurate |
| HUC8 Name | Keweenaw Peninsula |
| HUC8 Number | 04020103 |
| HUC10 Name | Portage Lake |
| HUC10 Number | 0402010303 |
| HUC12 Name | Portage Lake-Portage River |
| HUC12 Number | 040201030307 |
| Map | |
| Collection Day | 26 |
| Collection Month | 9 |
| Collection Year | 2006 |
| Year Accuracy | Actual |
| Potential Pathway | shipping ballast water |
| Status | established |
| Reference 1 |
| Ref. Number: | 16140 |
| Author: | Czypinski, G.D., A.K. Bowen, M.A. Goehle, and B. Brownson. |
| Date: | 2007 |
| Title: | Surveillance for ruffe in the Great Lakes, 2006. |
| Publisher: | US Fish and Wildlife Service, Ashland, WI. |
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| Record Type | Literature |
| Freshwater/Marine | Freshwater |
| Number Collected | 1 |
