Alert System User Statistics



Total Users
1103

StateSubscribers
California236
New York223
Pennsylvania211
Florida210
Oregon205
Washington192
Wisconsin192
Texas189
Michigan182
Nevada178
Idaho176
Minnesota176
Illinois176
Ohio174
Louisiana168
Alabama164
Montana164
Indiana164
Colorado156
Wyoming156
Mississippi155
North Carolina155
Massachusetts155
Arizona153
Virginia153
Vermont153
New Jersey153
Maryland153
New Hampshire152
Georgia151
Utah150
Maine149
Connecticut146
Alaska145
Arkansas142
Iowa138
Delaware138
Rhode Island138
South Carolina138
West virginia137
Oklahoma137
Missouri136
Tennessee134
Kansas133
Kentucky130
Hawaii130
South Dakota129
New Mexico128
North Dakota127
Nebraska123
District of Columbia118
Puerto Rico100
GroupSubscribers
Fishes409
Marine Fishes390
Mollusks-Bivalves334
Crustaceans-Crayfish279
Mollusks-Gastropods277
Amphibians-Frogs248
Reptiles-Snakes233
Crustaceans-Crabs232
Mammals232
Amphibians-Salamanders228
Reptiles-Turtles224
Plants219
Crustaceans-Shrimp217
Crustaceans-Amphipods200
Crustaceans-Copepods196
Crustaceans-Cladocerans193
Mollusks-Cephalopods192
Crustaceans-Mysids191
Reptiles-Crocodilians191
Crustaceans-Isopods183
Reptiles-Lizards171
Coelenterates-Hydrozoans153
Annelids-Oligochaetes151
Crustaceans-Barnacles149
Entoprocts144
Mollusks-Nudibranchs110
Coelenterates-Scyphozoan108
Crustaceans-Lobsters103
Crustaceans-Ostracods96
Sponges96
Tunicates95
Annelids-Polychaetes91
Coelenterates-Anthozoan86
Ectoprocts85
Cumaceans83
Polyplacophors82
Nebaliaceans80
Bryozoans69
Rotifers61
Annelids-Hirundinea43
Platyhelminthes31
Birds11
Amphibians-Caecilians4
Algae2
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 443
Northern Snakehead - Channa argus 358
quagga mussel - Dreissena rostriformis 341
Silver Carp - Hypophthalmichthys molitrix 320
Black Carp - Mylopharyngodon piceus 316
Bighead Carp - Hypophthalmichthys nobilis 312
Round Goby - Neogobius melanostomus 277
Ruffe - Gymnocephalus cernua 252
lionfish - Pterois volitans/miles 155
hydrilla - Hydrilla verticillata 33
Rusty Crayfish - Faxonius rusticus 31
dioecious hydrilla - Hydrilla verticillata [dioecious] 30
monoecious hydrilla - Hydrilla verticillata [monoecious] 30
common water - Eichhornia crassipes 28
Red Swamp Crayfish - Procambarus clarkii 28
starry stonewort - Nitellopsis obtusa 26
giant salvinia - Salvinia molesta 25
water chestnut - Trapa natans 23
water chestnut - Trapa bispinosa 23
Cuban Treefrog - Osteopilus septentrionalis 18
New Zealand mudsnail - Potamopyrgus antipodarum 3
red - Melanoides tuberculata 2
panther grouper - Chromileptes altivelis 1
African Jewelfish - Hemichromis letourneuxi 1
flowering rush - Butomus umbellatus 1
Nile perch - Lates niloticus 1
Asian clam - Corbicula fluminea 1
Northern Pike - Esox lucius 1
bigeye lates - Lates mariae 1
American Bullfrog - Lithobates catesbeianus 1
unidentified rams - Helisoma sp. 1
suckermouth catfish - Hypostomus sp. 1
Cane Toad - Rhinella marina 1
Suckermouth Catfish - Hypostomus plecostomus 1
Regal Demoiselle - Neopomacentrus cyanomos 1
Jaguar Guapote - Parachromis managuensis 1
red discus - Symphysodon discus 1
Lowland Cichlid - Herichthys carpintis 1
European ear snail - Radix auricularia 1
Chinese mitten crab - Eriocheir sinensis 1
a calanoid copepod - Eurytemora affinis 1
Bullseye Snakehead - Channa marulius 1
Alabama Bass - Micropterus henshalli 1
Grass Carp - Ctenopharyngodon idella 1
Tanganyika lates - Lates angustifrons 1
red devil - Amphilophus labiatus 1
giant applesnail - Pomacea maculata 1
Eurasian watermilfoil - Myriophyllum spicatum 1
Arizona Treefrog - Dryophytes wrightorum 1
Midas Cichlid - Amphilophus citrinellus 1
eastern happy - Astatotilapia calliptera 1
channeled applesnail - Pomacea canaliculata 1
Chanchita - Cichlasoma dimerus 1


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. [2022]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [1/16/2022].

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.