Alert System User Statistics



Total Users
1072

StateSubscribers
California232
New York218
Pennsylvania207
Florida207
Oregon201
Washington188
Wisconsin187
Texas186
Michigan179
Nevada176
Idaho173
Illinois173
Minnesota172
Ohio171
Louisiana166
Alabama163
Indiana161
Montana160
Colorado155
Massachusetts153
Wyoming153
Mississippi153
North Carolina152
Arizona151
New Hampshire150
Vermont150
New Jersey150
Georgia150
Virginia149
Maryland148
Utah147
Maine147
Connecticut144
Alaska143
Arkansas140
South Carolina137
Rhode Island136
Oklahoma136
Iowa135
Delaware135
Missouri134
West virginia132
Tennessee131
Kansas130
Hawaii129
Kentucky127
South Dakota126
New Mexico125
North Dakota124
Nebraska120
District of Columbia114
Puerto Rico99
GroupSubscribers
Fishes402
Marine Fishes387
Mollusks-Bivalves328
Crustaceans-Crayfish274
Mollusks-Gastropods272
Amphibians-Frogs243
Crustaceans-Crabs228
Mammals228
Reptiles-Snakes227
Amphibians-Salamanders223
Reptiles-Turtles218
Plants215
Crustaceans-Shrimp212
Crustaceans-Amphipods197
Crustaceans-Copepods194
Crustaceans-Cladocerans192
Crustaceans-Mysids187
Mollusks-Cephalopods187
Reptiles-Crocodilians186
Crustaceans-Isopods181
Reptiles-Lizards165
Coelenterates-Hydrozoans151
Annelids-Oligochaetes148
Crustaceans-Barnacles147
Entoprocts140
Mollusks-Nudibranchs111
Coelenterates-Scyphozoan106
Crustaceans-Lobsters104
Crustaceans-Ostracods97
Sponges97
Tunicates95
Annelids-Polychaetes92
Coelenterates-Anthozoan87
Ectoprocts86
Polyplacophors83
Cumaceans83
Nebaliaceans81
Bryozoans66
Rotifers58
Annelids-Hirundinea39
Platyhelminthes28
Birds11
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 433
Northern Snakehead - Channa argus 352
quagga mussel - Dreissena rostriformis 334
Silver Carp - Hypophthalmichthys molitrix 312
Black Carp - Mylopharyngodon piceus 309
Bighead Carp - Hypophthalmichthys nobilis 304
Round Goby - Neogobius melanostomus 273
Ruffe - Gymnocephalus cernua 249
lionfish - Pterois volitans/miles 154
hydrilla - Hydrilla verticillata 29
dioecious hydrilla - Hydrilla verticillata [dioecious] 26
Rusty Crayfish - Faxonius rusticus 26
monoecious hydrilla - Hydrilla verticillata [monoecious] 26
common water - Eichhornia crassipes 24
Red Swamp Crayfish - Procambarus clarkii 23
giant salvinia - Salvinia molesta 22
starry stonewort - Nitellopsis obtusa 22
water chestnut - Trapa natans 21
water chestnut - Trapa bispinosa 21
Cuban Treefrog - Osteopilus septentrionalis 15
New Zealand mudsnail - Potamopyrgus antipodarum 3
red - Melanoides tuberculata 2
African Jewelfish - Hemichromis letourneuxi 1
flowering rush - Butomus umbellatus 1
Asian clam - Corbicula fluminea 1
Northern Pike - Esox lucius 1
Alabama Bass - Micropterus henshalli 1
red devil - Amphilophus labiatus 1
giant applesnail - Pomacea maculata 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
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
American Bullfrog - Lithobates catesbeianus 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 [6/12/2021].

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.