Gymnocephalus cernua
Gymnocephalus cernua
(Ruffe)
Fishes
Exotic
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939 results for Gymnocephalus cernua (Ruffe)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1401294 MIAlgerLake Superior at Grand Marais2016 04180000 Lake Superiorestablished
1401295 MIAlgerLake Superior at Grand Marais2016 04180000 Lake Superiorestablished
1401293 MIAlgerLake Superior at Grand Marais2016 04180000 Lake Superiorestablished
166708 MIAlgerLake Superior, in West Bay at Grand Marais2006 04180000 Lake Superiorestablished
269004 MIAlpenaLake Huron [Thunder Bay ship canal] near Alpena1995 04240002 Lake Huronestablished
35509 MIAlpenaLake Huron, mouth of Thunder Bay River1995 04240002 Lake Huronestablished
35510 MIAlpenaLake Huron, mouth of Thunder Bay River1995 04240002 Lake Huronestablished
156398 MIAlpenaThunder Bay - within ship channel2000 04240002 Lake Huronestablished
159426 MIAlpenaThunder Bay - within ship channel2000 04240002 Lake Huronestablished
35545 MIAlpenaThunder Bay (River Shipping Channel)1999 04240002 Lake Huronestablished
35614 MIAlpenaThunder Bay (Shipping Canal)1998 04240002 Lake Huronestablished
35615 MIAlpenaThunder Bay (Shipping Canal)1998 04240002 Lake Huronestablished
35617 MIAlpenaThunder Bay River1998 04070006 Thunder Bayestablished
35616 MIAlpenaThunder Bay River1998 04070006 Thunder Bayestablished
156395 MIAlpenaThunder Bay River2000 04070006 Thunder Bayestablished
156396 MIAlpenaThunder Bay River2000 04070006 Thunder Bayestablished
156397 MIAlpenaThunder Bay River2000 04070006 Thunder Bayestablished
159124 MIAlpenaThunder Bay River2003 04070006 Thunder Bayestablished
35621 MIAlpenaThunder Bay River (~0.5-1 mi from the mouth)1999 04070006 Thunder Bayestablished
35622 MIAlpenaThunder Bay River (~0.5-1 mi from the mouth)1999 04070006 Thunder Bayestablished
35623 MIAlpenaThunder Bay River (~0.5-1 mi from the mouth)1999 04070006 Thunder Bayestablished
35394 MIAlpenaThunder Bay River (drains into Lake Huron)1996 04070006 Thunder Bayestablished
159427 MIAlpenaThunder Bay River and river mouth2000 04070006 Thunder Bayestablished
159442 MIAlpenaThunder Bay River and river mouth2002 04070006 Thunder Bayestablished
159443 MIAlpenaThunder Bay River and river mouth2002 04070006 Thunder Bayestablished
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Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [11/16/2025].

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For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.