NAS Alert System



The 10 most recent alerts are available at RSS

Total of 2878 alerts match your criteria. Click on each Specimen ID to get details about the collection.
Specimen IDDateSpeciesNew AreaAlert Risk Map Comments
1658552 9/20/2021 Jack Dempsey
Rocio octofasciata
State: PA
County: Philadelphia (PA)
Drainage: Schuylkill (02040203)
1658406 9/10/2021 quagga mussel
Dreissena rostriformis bugensis
State: CA
*Bonus* This is first the confirmation of quagga mussels in this lake.
1658525 9/9/2021 eyetail cichlids
Cichla sp.
State: PA
County: Allegheny (PA)
Drainage: Lower Allegheny (05010009)
1658235 9/8/2021 variable-leaf watermilfoil
Myriophyllum heterophyllum
County: Wayne (PA)
1658513 9/7/2021 zebra mussel
Dreissena polymorpha
County: Davison (SD)
Drainage: Lower James (10160011)
1658512 9/7/2021 zebra mussel
Dreissena polymorpha
Drainage: Western Wild Rice (09020105)
1658486 9/3/2021 zebra mussel
Dreissena polymorpha
County: Koochiching (MN)
Drainage: Rainy Lake (09030003)
1658491 9/3/2021 New Zealand mudsnail
Potamopyrgus antipodarum
County: Philadelphia (PA)
1658476 9/2/2021 Northern Snakehead
Channa argus
Drainage: Upper Delaware (02040101)
1658469 9/2/2021 Northern Snakehead
Channa argus
County: Norfolk (MA)
Drainage: Charles (01090001)
1658421 8/31/2021 Japanese mysterysnail
Cipangopaludina japonica
County: Washington (PA)
Drainage: Lower Monongahela (05020005)
1658381 8/27/2021 Fathead Minnow
Pimephales promelas
County: Churchill (NV)
Drainage: Carson Desert (16050203)
1658375 8/24/2021 Round Goby
Neogobius melanostomus
County: Albany (NY)
Drainage: Middle Hudson (02020006)
1658379 8/24/2021 European frogbit
Hydrocharis morsus-ranae
County: Marinette (WI)
Drainage: Menominee (04030108)
1658377 8/24/2021 European frogbit
Hydrocharis morsus-ranae
State: WI
County: Oconto (WI)
Drainage: Peshtigo (04030105)
1658365 8/20/2021 Rusty Crayfish
Faxonius rusticus
County: Cumberland (PA)
1658362 8/20/2021 freshwater jellyfish
Craspedacusta sowerbyi
County: King (WA)
Drainage: Lake Washington (17110012)
1658357 8/18/2021 freshwater jellyfish
Craspedacusta sowerbyi
County: El Dorado (CA)
1658325 8/11/2021 Grass Carp (diploid)
Ctenopharyngodon idella
County: Muskegon (MI)
Drainage: Muskegon (04060102)
1658249 8/9/2021 Clown Knifefish
Chitala ornata
Drainage: Lake Okeechobee (03090201)
1658263 8/9/2021 Black Carp
Mylopharyngodon piceus
State: IN
County: Posey (IN)
Drainage: Lower Wabash (05120113)
1658256 8/9/2021 magnificent bryozoan
Pectinatella magnifica
County: Camden (MO)
Drainage: Niangua (10290110)
1658239 8/4/2021 curly-leaf pondweed
Potamogeton crispus
County: Natrona (WY)
1658237 8/3/2021 water chestnut
Trapa natans
Drainage: Lackawaxen (02040103)
1658233 8/2/2021 Snapping Turtle
Chelydra serpentina
State: MT
County: Missoula (MT)
Drainage: Middle Clark Fork (17010204)


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. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [9/22/2021].

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 queries involving fish, please contact Matthew Neilson. For queries involving invertebrates, contact Amy Benson.