Bythotrephes longimanus
Bythotrephes longimanus
(spiny waterflea)
Crustaceans-Cladocerans
Exotic
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Impacts

69 results for Bythotrephes longimanus (spiny waterflea)
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Page:123
Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
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
1564304 MIAlcona[No locality description provided]2014 04070006 Thunder Bayestablished
243352 MIIronMichigamme Reservoir2005 04030107 Michigammecollected
243353 MIIronPeavy (Reservoir) Pond2005 04030107 Michigammecollected
1609867 MIMarquette[No locality description provided]2017 04030107 Michigammeestablished
155901 MIMarquetteLake Michigamme2001 04030107 Michigammeestablished
1692081 MIMarquetteLake Michigamme2017 04030107 Michigammeestablished
263380 MNMille LacsMille Lacs Lake2009 07010207 Rumestablished
278238 MNMille LacsMille Lacs Lake2010 07010207 Rumcollected
1715797 NHBelknapAlton Bay, Lake Winnipesaukee2023 01070002 Winnipesaukee Riverestablished
1715796 NHBelknapLake Winnisquam2023 01070002 Winnipesaukee Riverestablished
1714180 NHBelknapThe Broads, Lake Winnipesaukee2023 01070002 Winnipesaukee Riverestablished
1715798 NHCarrollWolfeboro Bay, Lake Winnipesaukee2023 01070002 Winnipesaukee Riverestablished
1886561 NHGraftonNewfound Lake2025 01070001 Pemigewasset River 
157297 ON Clear Lake, near Big Whitefish beside Hwy 69 and 1412001 04270203 Kawartha Lakesestablished
275797 ON Clear Lake, Ontario, Canada2001 04270203 Kawartha Lakesestablished
275996 ON Head Lake, 0 km to Haliburton1998 04270202 Gull Riverunknown
157294 ON Kennisis Lake2001 04270202 Gull Riverestablished
157264 ON Lake Canning, Minden Township1993 04270202 Gull Riverestablished
157300 ON Lovesick Lake2001 04270203 Kawartha Lakesestablished
157301 ON Lower Buckhorn Lake2001 04270203 Kawartha Lakesestablished
157273 ON Ottanobe River below Lakefield1996 04270204 Otonabee Riverestablished
157272 ON Pigeon Lake1996 04270203 Kawartha Lakesestablished
Page:123

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 [2/23/2026].

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