GLANSIS

Echinogammarus ischnus

Scud

Collection Information for Echinogammarus ischnus

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)

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Specimen ID	State	County	Locality	Year	HUC Number	Drainage Name	Status
253660	WI	Brown	Fox River below (north) of the DePere dam [near Green Bay]	2008	04030204	Lower Fox	established
253661	WI	Brown	Fox River above (south) of the Depere dam [near Green Bay]	2008	04030204	Lower Fox	established
253857	WI	Door	Lake Michigan, in Green Bay south of Egg Harbor in Frank E. Murphy State Park	2008	04190000	Lake Michigan	collected
785772	WI	Oconto	Green Bay just S of Little Suamico River mouth	2011	04030103	Duck-Pensaukee	established
785795	WI	Marinette	Peshtigo River near CR-BB at Keller Rd	2011	04030105	Peshtigo	established
785819	WI	Door	Mink River	2011	04030102	Door-Kewaunee	established
1421424	WI	Milwaukee	Milwaukee Harbor, WI	2016	04190000	Lake Michigan	established
1421425	WI	Milwaukee	Milwaukee Harbor, WI	2016	04190000	Lake Michigan	established
1421426	WI	Milwaukee	Milwaukee Harbor, WI	2016	04190000	Lake Michigan	established
1421427	WI	Milwaukee	Milwaukee Harbor, WI	2016	04190000	Lake Michigan	established
1421429	WI	Milwaukee	Milwaukee Harbor, WI	2016	04190000	Lake Michigan	established
1421430	WI	Milwaukee	Milwaukee Harbor, WI	2016	04040003	Milwaukee	established
1421416	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421417	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421418	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421419	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421420	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421421	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421431	WI	Milwaukee	Milwaukee Harbor, WI	2016	04190000	Lake Michigan	established
1421422	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1421423	WI	Brown	Lower Fox River/Green Bay, WI	2016	04030204	Lower Fox	established
1556576	WI	Racine	[No locality description provided]	2013	04190000	Lake Michigan	established
1709587	WI	Douglas	St. Louis River	2017	04180000	Lake Superior

Citation for this information:
U.S. Geological Survey, 2026, Echinogammarus ischnus: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov, Access Date: 2/22/2026