Bythotrephes longimanus
Bythotrephes longimanus
(spiny waterflea)
Crustaceans-Cladocerans
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517 results for Bythotrephes longimanus (spiny waterflea)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
154381   Lake Huron2001 04240002 Lake Huronestablished
1926966   Lake Huron, CAPE IPPERWASH WGS-84 - POST-OP DIFFERENTIALLY CORR.2002 04240002 Lake Huron 
1926967   Lake Huron, CAPE IPPERWASH WGS-84 - POST-OP DIFFERENTIALLY CORR.2002 04240002 Lake Huron 
1926968   Lake Huron, CAPE IPPERWASH WGS-84 - POST-OP DIFFERENTIALLY CORR.2002 04240002 Lake Huron 
1926969   Lake Huron, CAPE IPPERWASH WGS-84 - POST-OP DIFFERENTIALLY CORR.2002 04240002 Lake Huron 
1926965   Lake Huron, GODERICH-MORE PRECISE POSITION RECORDED WITH DGPS AUGUST 19952002 04240002 Lake Huron 
1926994   Lake Ontario, PICKERING - OFFSHORE2003 04280002 Lake Ontario 
1926995   Lake Ontario, PICKERING - OFFSHORE2003 04280002 Lake Ontario 
1926996   Lake Ontario, PICKERING - OFFSHORE2003 04280002 Lake Ontario 
1926997   Lake Ontario, PICKERING - OFFSHORE2003 04280002 Lake Ontario 
1926998   Lake Ontario, PICKERING - OFFSHORE2003 04280002 Lake Ontario 
291198 ILCookCal-Sag Channel, at Worth Street boat ramp2010 07120003 Chicagounknown
291190 ILCookLittle Calumet River, at O'Brien Lock and Dam south of Lake Calumet (north of Calumet City)2010 07120003 Chicagounknown
291201 ILCookLittle Calumet River, at O'Brien Lock and Dam south of Lake Calumet (north of Calumet City)2011 07120003 Chicagounknown
160821 MI Lake Huron, southern part1984 04240002 Lake Huronestablished
4350 MI Lake Huron1984 04240002 Lake Huronestablished
4048 MI Lake Huron1988 04240002 Lake Huronestablished
250063 MIAlconaLake Huron, EPA Station HU371999 04240002 Lake Huronestablished
253004 MIAlconaLake Huron, EPA Station HU372001 04240002 Lake Huronestablished
255060 MIAlconaLake Huron, EPA Station HU372002 04240002 Lake Huronestablished
155479 MIAlgerBeaver Lake, Pictured Rocks National Lakeshore1998 04020201 Betsy-Chocolayestablished
250065 MIAlpenaLake Huron, EPA Station HU45M1998 04240002 Lake Huronestablished
253006 MIAlpenaLake Huron, EPA Station HU45M1999 04240002 Lake Huronestablished
255062 MIAlpenaLake Huron, EPA Station HU45M2001 04240002 Lake Huronestablished
255138 MIAlpenaLake Huron, EPA Station HU45M2002 04240002 Lake Huronestablished
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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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [6/24/2026].

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