6/22/2026: Trapa natans found in the Middle Allegheny-Tionesta Subbasin (Crawford County, Pennsylvania)
USGS Nonindigenous Aquatic Species Alert - 06/22/26 - water chestnut (Trapa natans) was found in ...
6/18/2026: Limnoperna fortunei found in California
*Bonus* USGS Nonindigenous Aquatic Species Alert - 06/18/26 - Golden Mussel (Limnoperna fortunei)...
6/18/2026: Channa argus found in Dauphin County (Pennsylvania)
USGS Nonindigenous Aquatic Species Alert - 06/18/26 - Northern Snakehead (Channa argus) was found...
6/18/2026: Potamopyrgus antipodarum found in the Middle Delaware-Mongaup-Brodhead Subbasin (Monroe County, Pennsylvania)
USGS Nonindigenous Aquatic Species Alert - 06/18/26 - New Zealand mudsnail (Potamopyrgus antipoda...
6/1/2026: Limnoperna fortunei found in California
*Bonus* USGS Nonindigenous Aquatic Species Alert - 06/01/26 - Golden Mussel (Limnoperna fortunei)...
5/21/2026: Limnoperna fortunei found in California
*Bonus* USGS Nonindigenous Aquatic Species Alert - 05/21/26 - Golden Mussel (Limnoperna fortunei)...
5/21/2026: Limnoperna fortunei found in the San Gabriel Subbasin (California)
USGS Nonindigenous Aquatic Species Alert - 05/21/26 - Golden Mussel (Limnoperna fortunei) was fou...
5/18/2026: Pterygoplichthys sp. found in the Rio Grande-Albuquerque Subbasin (Bernalillo County, New Mexico)
USGS Nonindigenous Aquatic Species Alert - 05/18/26 - sailfin armored catfish (Pterygoplichthys s...
6/13/2019: Alligator mississippiensis found in the Upper Ohio Subbasin (Pennsylvania)
USGS Nonindigenous Aquatic Species Alert - 06/13/19 - American alligator (Alligator mississippien...
6/11/2019: Xiphophorus maculatus found in Martin County (Florida)
USGS Nonindigenous Aquatic Species Alert - 06/11/19 - Southern Platyfish (Xiphophorus maculatus) ...
6/11/2019: Monopterus albus found in New York
USGS Nonindigenous Aquatic Species Alert - 06/11/19 - Asian Swamp Eel (Monopterus albus) was foun...
6/10/2019: Cipangopaludina chinensis found in the Cohansey-Maurice Subbasin (Salem County, New Jersey)
USGS Nonindigenous Aquatic Species Alert - 06/10/19 - Chinese mysterysnail (Cipangopaludina chine...
6/7/2019: Mylopharyngodon piceus found in the Highland-Pigeon Subbasin (Union County, Kentucky)
USGS Nonindigenous Aquatic Species Alert - 06/07/19 - Black Carp (Mylopharyngodon piceus) was fou...
6/6/2019: Proterorhinus semilunaris found in the Cheboygan Subbasin (Cheboygan County, Michigan)
USGS Nonindigenous Aquatic Species Alert - 06/06/19 - Freshwater Tubenose Goby (Proterorhinus sem...
6/4/2019: Potamopyrgus antipodarum found in New Mexico
USGS Nonindigenous Aquatic Species Alert - 06/04/19 - New Zealand mudsnail (Potamopyrgus antipoda...
6/3/2019: Cipangopaludina chinensis found in the Lower White Subbasin (Monroe County, Indiana)
USGS Nonindigenous Aquatic Species Alert - 06/03/19 - Chinese mysterysnail (Cipangopaludina chine...
5/31/2019: Piaractus brachypomus found in the Medina Subbasin (Bandera County, Texas)
USGS Nonindigenous Aquatic Species Alert - 05/31/19 - pirapatinga, red-bellied pacu (Piaractus br...
5/31/2019: Trachemys scripta found in Virginia Beach City County (Virginia)
USGS Nonindigenous Aquatic Species Alert - 05/31/19 - Red-eared Slider (Trachemys scripta) was fo...