Specimen Information

Gymnocephalus cernua
Gymnocephalus cernua
(Ruffe)
Fishes
Exotic

Specimen ID1736740
GroupFishes
GenusGymnocephalus
Speciescernua
Common NameRuffe
StateMN
CountyLake
LocalityLake Superior, approximately 1.7 miles northeast of Two Harbors harbor
Mapping AccuracyAccurate
HUC8 NameLake Superior
HUC8 Number04180000
HUC10 NameLake Superior
HUC10 Number0418000002
HUC12 NameLake Superior
HUC12 Number041800000200
Map
+
Collection Day11
Collection Month6
Collection Year2024
Year AccuracyActual
Potential Pathwaydispersed
CommentsGravid female, captured at ~50 ft depth. 207 mm total length; weight of 126 grams.
Record TypeNAS sighting report
VerifierM. Neilson (U.S. Geological Survey)
Freshwater/MarineFreshwater
Number Collected1
Number of Females1
Photo
Ruffe on fish measuring board with dorsal fin raised by hand
Ruffe lying flat


Disclaimer:

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. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/30/2024].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

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