Bythotrephes longimanus

Spiny waterflea

Collection Information for Bythotrephes longimanus

Results limited to All Great Lakes Drainages.
To see the collection list for the entire United States, click here.
 Results also available in (click to export table to spreadsheet)

(click table headers to sort)
Specimen IDStateCountyLocalityYearHUC NumberDrainage NameStatus
4960MNSt. LouisCloquet River from Island Lake to the St. Louis River199704010202Cloquetestablished
4049MN Lake Superior198804180000Lake Superiorestablished
4266MN Lake Superior198704180000Lake Superiorestablished
4961MNCarltonSt. Louis River downstream of the Cloquet River199704010201St. Louisestablished
4958MNSt. LouisFish Lake [=Fishing Lakes?]199704010201St. Louisunknown
4959MNSt. LouisIsland Lake199704010201St. Louisestablished
160954MNCookGreenwood Lake (in the Gunflint Trail area lakes near the Canadian border)200404010101Baptism-Bruleestablished
160955MNCookFlour Lake (in the Gunflint Trail area lakes near the Canadian border)200404010101Baptism-Bruleestablished
278232MNCookPigeon River, downstream of South Fowl Lake [US/Canada border]201004010101Baptism-Brulecollected
238862MNCookCaribou Lake [in the Boundary Waters Canoe Area Wilderness W of Pine Lake and S of Clearwater Lake]200404010101Baptism-Bruleestablished
241013MNCookMcFarland Lake [Boundary Waters Canoe Area Wilderness near Canadian border]200404010101Baptism-Bruleestablished
241014MNCookPine Lake [Boundary Waters Canoe Area Wilderness near border with Canada]200404010101Baptism-Bruleestablished
250343MNCookLake Superior, EPA Station SU18199804180000Lake Superiorestablished
253183MNCookLake Superior, EPA Station SU18200204180000Lake Superiorestablished
253184MNCookLake Superior, EPA Station SU19200104180000Lake Superiorestablished
250344MNCookLake Superior, EPA Station SU19199804180000Lake Superiorestablished
255263MNCookLake Superior, EPA Station SU19200204180000Lake Superiorestablished
260214MNCookDevil Track Lake [~4 mi N of Grand Marais]200804010101Baptism-Bruleestablished
262918MNSt. LouisSt. Louis River, downstream of the Cloquet River200904010201St. Louisestablished
277718MNCookLittle John Lake201004010101Baptism-Bruleestablished
278231MNCookNorth Fowl Lake201004010101Baptism-Brulecollected
278235MNCookRoyal Lake (on the Royal River201004010101Baptism-Brulecollected
278236MNCookRoyal River (between Little John and North Fowl Lake)201004010101Baptism-Brulecollected
278237MNCookSouth Fowl Lake201004010101Baptism-Brulecollected
1397798MNCookDevilfish Lake201604010101Baptism-Bruleunknown
1553836MNCook[No locality description provided]200904010101Baptism-Bruleestablished
1553837MNCook[No locality description provided]200904010101Baptism-Bruleestablished
1565586MNSt. Louis[No locality description provided]201404010201St. Louisestablished
1560619MNSt. Louis[No locality description provided]201304010201St. Louisestablished
1565573MNSt. Louis[No locality description provided]201404010201St. Louisestablished
1565582MNSt. Louis[No locality description provided]201404010201St. Louisestablished
1565596MNSt. Louis[No locality description provided]201404010201St. Louisestablished
1605725MNSt. Louis[No locality description provided]201504010202Cloquetestablished
1605726MNSt. Louis[No locality description provided]201504010202Cloquetestablished
1605727MNSt. Louis[No locality description provided]201504010202Cloquetestablished
1605728MNSt. Louis[No locality description provided]201504010202Cloquetestablished
1685322MNCook[no locality description provided]201204010101Baptism-Bruleunknown
1685496MNCook[no locality description provided]201004010101Baptism-Bruleunknown
1685497MNCook[no locality description provided]201004010101Baptism-Bruleunknown
1685499MNCook[no locality description provided]201004010101Baptism-Bruleunknown
1685500MNCook[no locality description provided]201004010101Baptism-Bruleunknown
1685501MNCook[no locality description provided]200904010101Baptism-Bruleunknown
1685503MNSt. Louis[no locality description provided]199004010202Cloquetunknown
1685504MNSt. Louis[no locality description provided]199004010202Cloquetunknown
1685506MNCook[no locality description provided]200704010101Baptism-Bruleunknown
1685507MNSt. Louis[no locality description provided]199004010202Cloquetunknown
1685510MNSt. LouisIsland Lake199504010202Cloquetunknown
1685511MNSt. LouisCloquet River199504010202Cloquetunknown
1685512MNSt. LouisFish Lake199504010202Cloquetunknown
1685513MNSt. LouisSt. Louis River199504010201St. Louisunknown
1685518MNCookDevil Track199504010101Baptism-Bruleunknown
1709497MNSt. LouisSt. Louis River201804010201St. Louis 
1709498MNSt. LouisSt. Louis River201804180000Lake Superior 
1709499MNSt. LouisSt. Louis River201804180000Lake Superior 
1709500MNSt. LouisSt. Louis River201804180000Lake Superior 
1709504MNSt. LouisSt. Louis River201804180000Lake Superior 
1709505MNSt. LouisSt. Louis River201804180000Lake Superior 
1893325MNSt. LouisIsland Lake Reservoir202204010202Cloquetestablished
1893324MNSt. LouisIsland Lake Reservoir202104010202Cloquetestablished

Citation for this information:
U.S. Geological Survey, 2026, Bythotrephes longimanus: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 1/11/2026