NAS Alert System



The 10 most recent alerts are available at RSS

Total of 2270 alerts match your criteria. Click on each Specimen ID to get details about the collection.
Specimen IDDateSpeciesNew AreaAlert Risk Map Comments
1468750 8/14/2018 starry stonewort
Nitellopsis obtusa
Drainage: Clearwater-Elk (7010203)
1468758 8/14/2018 Asian clam
Corbicula fluminea
County: Santa Clara (CA)
Drainage: Coyote (18050003)
1468741 8/14/2018 clown anemonefish
Amphiprion ocellaris
Country: US
State: FL
County: Pinellas (FL)
Drainage: Northern Gulf of Mexico (32004300)
NAS ARM map was not generated because we presume the introduction has failed.
1468727 8/13/2018 Asian shore crab
Hemigrapsus sanguineus
County: Middlesex (MA)
NAS ARM maps are not generated for marine introductions.
1468711 8/10/2018 Rusty Crayfish
Faxonius rusticus
County: Crawford (MI)
1468681 8/9/2018 giant applesnail
Pomacea maculata
County: Cameron (TX)
Drainage: South Laguna Madre (12110208)
*Bonus* Animals found in 2015, but occurrence not published until 2017
1468700 8/9/2018 a copepod
Mesocyclops pehpeiensis
State: OH
County: Ottawa (OH)
1468699 8/9/2018 purple lythrum
Lythrum salicaria
County: Sacramento (CA)
1468688 8/8/2018 African Jewelfish
Hemichromis letourneuxi
Drainage: Cape Canaveral (3080202)
1468669 8/7/2018 Chinese mysterysnail
Cipangopaludina chinensis
County: Santa Cruz (CA)
Drainage: Pajaro (18060002)
1468611 8/6/2018 water chestnut
Trapa natans
County: Mercer (PA)
Drainage: Shenango (5030102)
1468609 8/5/2018 water chestnut
Trapa natans
County: Lehigh (PA)
Drainage: Lehigh (2040106)
1468532 8/3/2018 starry stonewort
Nitellopsis obtusa
County: Hennepin (MN)
Drainage: Twin Cities (7010206)
1468514 8/2/2018 pirapatinga, red-bellied pacu
Piaractus brachypomus
County: Caddo (OK)
Drainage: Upper Washita (11130302)
NAS ARM map was not generated because we presume the introduction has failed.
1468312 8/1/2018 Chinese mysterysnail
Cipangopaludina chinensis
Drainage: Contoocook (1070003)
1468315 8/1/2018 Asian clam
Corbicula fluminea
Drainage: Lower Crab (17020015)
1468207 7/31/2018 red-rim melania
Melanoides tuberculatus
County: San Diego (CA)
Drainage: San Diego (18070304)
1468192 7/30/2018 brittle waternymph
Najas minor
County: Ellis (TX)
Drainage: Chambers (12030109)
1468196 7/30/2018 curly-leaf pondweed
Potamogeton crispus
County: Kootenai (ID)
Drainage: Coeur d'Alene Lake (17010303)
1468144 7/27/2018 magnificent bryozoan
Pectinatella magnifica
County: Pierce (WA)
1468056 7/26/2018 yellow floating-heart
Nymphoides peltata
County: Morrow (OH)
Drainage: Walhonding (5040003)
1467957 7/24/2018 Northern Snakehead
Channa argus
County: Chester (PA)
1467955 7/24/2018 New Zealand mudsnail
Potamopyrgus antipodarum
County: Lehigh (PA)
Drainage: Lehigh (2040106)
1467974 7/24/2018 Goldfish
Carassius auratus
County: Huntington (IN)
Drainage: Upper Wabash (5120101)
1467976 7/24/2018 Goldfish
Carassius auratus
County: Polk (IA)
Drainage: Middle Des Moines (7100004)
NAS ARM map was not generated because the location of the introduction is non-specific.

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Page Contact Information: Pam Fuller - NAS Program (
Page Last Modified: Monday, July 30, 2018


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. [2018]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [8/17/2018].

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 Pam Fuller. For queries involving invertebrates, contact Amy Benson.