10/1/2025: Egeria densa found in the Upper Ohio Subbasin (Beaver County, Pennsylvania)
USGS Nonindigenous Aquatic Species Alert - 10/01/25 - Brazilian waterweed (Egeria densa) was foun...
9/29/2025: Dreissena polymorpha found in the Lake Sakakawea Subbasin (Burke County, North Dakota)
USGS Nonindigenous Aquatic Species Alert - 09/29/25 - zebra mussel (Dreissena polymorpha) was fou...
9/25/2025: Pomacanthus imperator found in Palm Beach County (Florida)
USGS Nonindigenous Aquatic Species Alert - 09/25/25 - emperor angelfish (Pomacanthus imperator) w...
9/24/2025: Monopterus albus found in Charlotte County (Florida)
USGS Nonindigenous Aquatic Species Alert - 09/24/25 - Asian Swamp Eel (Monopterus albus) was foun...
9/23/2025: Dreissena polymorpha found in the Upper Clear Fork Brazos Subbasin (Jones County, Texas)
USGS Nonindigenous Aquatic Species Alert - 09/23/25 - zebra mussel (Dreissena polymorpha) was fou...
9/23/2025: Bythotrephes longimanus found in the Pemigewasset River Subbasin (Grafton County, New Hampshire)
USGS Nonindigenous Aquatic Species Alert - 09/23/25 - spiny waterflea (Bythotrephes longimanus) w...
9/23/2025: Craspedacusta sowerbii found in the Elm Fork Trinity Subbasin (Texas)
USGS Nonindigenous Aquatic Species Alert - 09/23/25 - freshwater jellyfish (Craspedacusta sowerbi...
9/22/2025: Limnoperna fortunei found in the Upper Mokelumne Subbasin (California)
USGS Nonindigenous Aquatic Species Alert - 09/22/25 - Golden Mussel (Limnoperna fortunei) was fou...
9/22/2025: Limnoperna fortunei found in California
*Bonus* USGS Nonindigenous Aquatic Species Alert - 09/22/25 - Golden Mussel (Limnoperna fortunei)...
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...