Alert System User Statistics



Total Users
1091

StateSubscribers
California235
New York220
Florida209
Pennsylvania208
Oregon204
Wisconsin191
Washington190
Texas188
Michigan182
Nevada177
Illinois176
Minnesota175
Idaho175
Ohio174
Louisiana167
Alabama164
Indiana164
Montana163
Colorado155
Wyoming155
Mississippi155
Massachusetts154
Arizona153
Vermont152
North Carolina152
New Hampshire151
New Jersey150
Georgia150
Utah149
Virginia149
Maine148
Maryland148
Alaska145
Connecticut145
Arkansas142
Iowa137
Rhode Island137
South Carolina137
Missouri136
Oklahoma136
Delaware135
West virginia132
Kansas132
Tennessee132
Hawaii130
Kentucky128
South Dakota128
New Mexico127
North Dakota126
Nebraska122
District of Columbia114
Puerto Rico99
GroupSubscribers
Fishes406
Marine Fishes388
Mollusks-Bivalves332
Crustaceans-Crayfish277
Mollusks-Gastropods275
Amphibians-Frogs245
Reptiles-Snakes230
Crustaceans-Crabs230
Mammals229
Amphibians-Salamanders225
Reptiles-Turtles221
Plants218
Crustaceans-Shrimp214
Crustaceans-Amphipods199
Crustaceans-Copepods195
Crustaceans-Cladocerans193
Crustaceans-Mysids189
Mollusks-Cephalopods189
Reptiles-Crocodilians188
Crustaceans-Isopods183
Reptiles-Lizards168
Coelenterates-Hydrozoans152
Annelids-Oligochaetes149
Crustaceans-Barnacles148
Entoprocts142
Mollusks-Nudibranchs111
Coelenterates-Scyphozoan107
Crustaceans-Lobsters104
Crustaceans-Ostracods97
Sponges97
Tunicates95
Annelids-Polychaetes92
Coelenterates-Anthozoan87
Ectoprocts86
Polyplacophors83
Cumaceans83
Nebaliaceans81
Bryozoans67
Rotifers59
Annelids-Hirundinea41
Platyhelminthes29
Birds11
Amphibians-Caecilians1
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 439
Northern Snakehead - Channa argus 355
quagga mussel - Dreissena rostriformis 339
Silver Carp - Hypophthalmichthys molitrix 317
Black Carp - Mylopharyngodon piceus 314
Bighead Carp - Hypophthalmichthys nobilis 309
Round Goby - Neogobius melanostomus 275
Ruffe - Gymnocephalus cernua 251
lionfish - Pterois volitans/miles 154
hydrilla - Hydrilla verticillata 32
Rusty Crayfish - Faxonius rusticus 30
dioecious hydrilla - Hydrilla verticillata [dioecious] 29
monoecious hydrilla - Hydrilla verticillata [monoecious] 29
common water - Eichhornia crassipes 27
Red Swamp Crayfish - Procambarus clarkii 26
starry stonewort - Nitellopsis obtusa 25
giant salvinia - Salvinia molesta 24
water chestnut - Trapa natans 22
water chestnut - Trapa bispinosa 22
Cuban Treefrog - Osteopilus septentrionalis 16
New Zealand mudsnail - Potamopyrgus antipodarum 3
red - Melanoides tuberculata 2
African Jewelfish - Hemichromis letourneuxi 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
red devil - Amphilophus labiatus 1
flowering rush - Butomus umbellatus 1
Asian clam - Corbicula fluminea 1
Northern Pike - Esox lucius 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. [2021]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [9/21/2021].

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.