Link to USGS home page.
NAS - Nonindigenous Aquatic Species



Gymnocephalus cernuus
(ruffe)
Fishes
Exotic to United States


Specimen ID242945
GroupFishes
GenusGymnocephalus
Speciescernuus
Common Nameruffe
StateWI
CountyMarinette
LocalityGreen Bay of Lake Michigan about 1.5 miles SE of Marinette
HUC8 NameLake Michigan
HUC8 Number4060200
Latitude45.0708
Longitude-87.57
Lat-Long SourceMap derived
Lat-Long Accuracyaccurate
Map
Day15
Month6 (June)
Year2007
Year Accuracy (Specimen)Actual
Contact[not displayed for privacy reasons]
Primary Pathwayshipping ballast water
Statusestablished
Record TypePersonal communication
VerifierCarol Stepien, U. of Toledo
Fresh/Marine IntroductionFreshwater
Number Collected/Observed1





USA.gov button  Take Pride in America button