GLANSIS

Bythotrephes longimanus

Spiny waterflea

Collection Information for Bythotrephes longimanus

Results limited to HUC #04180000.
To see the collection list for the entire Great Lakes region, click here.
To see the collection list for the entire United States, click here.
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Specimen ID	State	County	Locality	Year	HUC Number	Drainage Name	Status
4265	MI		Lake Superior	1987	04180000	Lake Superior	established
168296	MI	Keweenaw	Lake Superior, from Amygdaloid Channel [between Amygdaloid Island and Isle Royale]	2006	04180000	Lake Superior	established
250317	MI	Chippewa	Lake Superior, EPA Station SU01M	1998	04180000	Lake Superior	established
253157	MI	Chippewa	Lake Superior, EPA Station SU01M	1999	04180000	Lake Superior	established
255240	MI	Chippewa	Lake Superior, EPA Station SU01M	2001	04180000	Lake Superior	established
255267	MI	Chippewa	Lake Superior, EPA Station SU01M	2005	04180000	Lake Superior	established
255266	MI	Chippewa	Lake Superior, EPA Station SU01M	2003	04180000	Lake Superior	established
255268	MI	Chippewa	Lake Superior, EPA Station SU01M	2006	04180000	Lake Superior	established
255252	MI	Chippewa	Lake Superior, EPA Station SU01M	2002	04180000	Lake Superior	established
253167	MI	Luce	Lake Superior, EPA Station SU03	2001	04180000	Lake Superior	established
250319	MI	Luce	Lake Superior, EPA Station SU03	1999	04180000	Lake Superior	established
255242	MI	Luce	Lake Superior, EPA Station SU03	2002	04180000	Lake Superior	established
253168	MI	Alger	Lake Superior, EPA Station SU04	2002	04180000	Lake Superior	established
250320	MI	Alger	Lake Superior, EPA Station SU04	1998	04180000	Lake Superior	established
250321	MI	Alger	Lake Superior, EPA Station SU05	1998	04180000	Lake Superior	established
253169	MI	Alger	Lake Superior, EPA Station SU05	1999	04180000	Lake Superior	established
255243	MI	Alger	Lake Superior, EPA Station SU05	2001	04180000	Lake Superior	established
255253	MI	Alger	Lake Superior, EPA Station SU05	2002	04180000	Lake Superior	established
250325	MI	Alger	Lake Superior, EPA Station SU08M	1998	04180000	Lake Superior	established
253171	MI	Alger	Lake Superior, EPA Station SU08M	2002	04180000	Lake Superior	established
255245	MI	Alger	Lake Superior, EPA Station SU08M	2006	04180000	Lake Superior	established
250335	MI	Keweenaw	Lake Superior, EPA Station SU10	1998	04180000	Lake Superior	established
253173	MI	Keweenaw	Lake Superior, EPA Station SU10	1999	04180000	Lake Superior	established
255256	MI	Keweenaw	Lake Superior, EPA Station SU10	2002	04180000	Lake Superior	established
253175	MI	Keweenaw	Lake Superior, EPA Station SU12	1999	04180000	Lake Superior	established
255269	MI	Keweenaw	Lake Superior, EPA Station SU12	2002	04180000	Lake Superior	established
250337	MI	Keweenaw	Lake Superior, EPA Station SU12	1998	04180000	Lake Superior	established
255259	MI	Keweenaw	Lake Superior, EPA Station SU12	2001	04180000	Lake Superior	established
1609895	MI	Ontonagon	[No locality description provided]	2017	04180000	Lake Superior	established
276086	MI	Keweenaw	Little Trout Bay, Thunder Bay District	1998	04180000	Lake Superior	unknown
250342	MI	Ontonagon	Lake Superior, EPA Station SU17M	1998	04180000	Lake Superior	established
250341	MI	Ontonagon	Lake Superior, EPA Station SU16	1998	04180000	Lake Superior	established
253182	MI	Ontonagon	Lake Superior, EPA Station SU17M	1999	04180000	Lake Superior	established
253181	MI	Ontonagon	Lake Superior, EPA Station SU16	1999	04180000	Lake Superior	established
253176	MI	Keweenaw	Lake Superior, EPA Station SU13	2001	04180000	Lake Superior	established
253178	MI	Keweenaw	Lake Superior, EPA Station SU14	1999	04180000	Lake Superior	established
255262	MI	Ontonagon	Lake Superior, EPA Station SU17M	2001	04180000	Lake Superior	established
1425216	MI	Keweenaw	Lake Superior	1987	04180000	Lake Superior	established
255270	MI	Keweenaw	Lake Superior, EPA Station SU14	2002	04180000	Lake Superior	established
250338	MI	Keweenaw	Lake Superior, EPA Station SU13	1999	04180000	Lake Superior	established
250339	MI	Keweenaw	Lake Superior, EPA Station SU14	1998	04180000	Lake Superior	established
269025	MI	Keweenaw	Lake Superior	1987	04180000	Lake Superior	established
255261	MI	Ontonagon	Lake Superior, EPA Station SU16	2001	04180000	Lake Superior	established
255260	MI	Keweenaw	Lake Superior, EPA Station SU14	2001	04180000	Lake Superior	established
255271	MI	Ontonagon	Lake Superior, EPA Station SU17M	2006	04180000	Lake Superior	established

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