NAS Alert System

NASAlertSystem

FILTER ALERT RESULTS



The 10 most recent alerts are available at RSS

Total of 3664 alerts match your criteria. Click on each Specimen ID to get details about the collection.
Specimen IDDateSpeciesNew AreaAlert Risk Map Comments
1886816 11/21/2025 giant salvinia
Salvinia molesta
County: Leon (FL)
Drainage: Lower Ochlockonee (03120003)
 
1886813 11/20/2025 Blue Catfish
Ictalurus furcatus
County: Delaware (PA)
Drainage: Lower Delaware (02040202)
 
1886811 11/20/2025 Red Swamp Crayfish
Procambarus clarkii
County: St. Louis (MO)
Drainage: Meramec (07140102)
 
1886815 11/20/2025 Axolotl
Ambystoma mexicanum
Country: US
State: PA
County: Erie (PA)
Drainage: Chautauqua-Conneaut (04120101)
 
1886777 11/19/2025 American lobster
Homarus americanus
State: NY
County: Oneida (NY)
Drainage: Oneida (04140202)
 
1886809 11/19/2025 Australian spotted jellyfish
Phyllorhiza punctata
County: Cameron (TX)
Drainage: South Laguna Madre (12110208)
 
1886804 11/19/2025 Flathead Catfish
Pylodictis olivaris
County: Habersham (GA)
Drainage: Tugaloo (03060102)
 
1886784 11/18/2025 Northern Snakehead
Channa argus
County: Wayne (PA)
Drainage: Lackawaxen (02040103)
 
1886778 11/18/2025 red-rim melania
Melanoides tuberculata
Drainage: Aliso-San Onofre (18070301)
 
1886766 11/17/2025 Black Carp
Mylopharyngodon piceus
County: Hempstead (AR)
Drainage: Lower Little Arkansas, Oklahoma (11140109)
 
242795 11/17/2025 Large scale loach
Paramisgurnus dabryanus
State: MD
*Bonus* Originally identified as Pond Loach (Misgurnus anguillicaudatus), but was reidentified in 2025 by NCSM staff
1886764 11/17/2025 New Zealand mudsnail
Potamopyrgus antipodarum
Drainage: Roaring Fork (14010004)
 
1886705 11/14/2025 Red Swamp Crayfish
Procambarus clarkii
County: Lycoming (PA)
Drainage: Lower West Branch Susquehanna (02050206)
 
1886712 11/14/2025 banded mysterysnail
Callinina georgiana
County: Franklin (VT)
Drainage: Lake Champlain (04300108)
 
1886759 11/14/2025 freshwater jellyfish
Craspedacusta sowerbii
County: Jasper (GA)
Drainage: Upper Oconee (03070101)
 
1886716 11/14/2025 New Zealand mudsnail
Potamopyrgus antipodarum
Drainage: Tonto (15060105)
 
1886694 11/13/2025 Western Mosquitofish
Gambusia affinis
County: Crawford (PA)
Drainage: Shenango (05030102)
 
1886695 11/13/2025 alligatorweed
Alternanthera philoxeroides
County: Washington (VA)
Drainage: North Fork Holston (06010101)
 
1886703 11/13/2025 Rusty Crayfish
Faxonius rusticus
County: Fillmore (MN)
Drainage: Root (07040008)
 
1886699 11/13/2025 zebra mussel
Dreissena polymorpha
Drainage: Lower Gunnison (14020005)
 
1886690 10/1/2025 Brazilian waterweed
Egeria densa
County: Beaver (PA)
Drainage: Upper Ohio (05030101)
 
1886673 9/29/2025 zebra mussel
Dreissena polymorpha
County: Burke (ND)
Drainage: Lake Sakakawea (10110101)
 
1886610 9/25/2025 emperor angelfish
Pomacanthus imperator
County: Palm Beach (FL)
Drainage: Florida Southeast Coast (03090206)
 
1886609 9/24/2025 Asian Swamp Eel
Monopterus albus
County: Charlotte (FL)
Drainage: Charlotte Harbor (03100103)
 
1886607 9/23/2025 freshwater jellyfish
Craspedacusta sowerbii
Drainage: Elm Fork Trinity (12030103)
 
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Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/4/2025].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.