Alert System User Statistics



Total Users
1063

StateSubscribers
California229
New York216
Florida205
Pennsylvania204
Oregon199
Washington185
Wisconsin185
Texas184
Michigan177
Nevada173
Illinois171
Minnesota170
Idaho170
Ohio169
Louisiana164
Alabama161
Indiana159
Montana157
Colorado152
Massachusetts151
Mississippi151
Wyoming150
Arizona149
North Carolina149
New Hampshire148
Vermont148
New Jersey148
Georgia148
Virginia146
Maine145
Maryland145
Utah144
Connecticut142
Alaska141
Arkansas138
South Carolina135
Rhode Island134
Oklahoma134
Iowa133
Delaware133
Missouri132
West virginia130
Tennessee129
Kansas128
Hawaii127
Kentucky125
South Dakota124
New Mexico123
North Dakota122
Nebraska118
District of Columbia111
Puerto Rico97
GroupSubscribers
Fishes399
Marine Fishes386
Mollusks-Bivalves324
Crustaceans-Crayfish272
Mollusks-Gastropods271
Amphibians-Frogs241
Crustaceans-Crabs227
Reptiles-Snakes226
Mammals226
Amphibians-Salamanders222
Reptiles-Turtles217
Plants213
Crustaceans-Shrimp211
Crustaceans-Amphipods196
Crustaceans-Copepods193
Crustaceans-Cladocerans191
Crustaceans-Mysids186
Mollusks-Cephalopods186
Reptiles-Crocodilians185
Crustaceans-Isopods180
Reptiles-Lizards164
Coelenterates-Hydrozoans150
Annelids-Oligochaetes147
Crustaceans-Barnacles146
Entoprocts139
Mollusks-Nudibranchs111
Coelenterates-Scyphozoan105
Crustaceans-Lobsters104
Crustaceans-Ostracods97
Sponges97
Tunicates95
Annelids-Polychaetes92
Coelenterates-Anthozoan87
Ectoprocts86
Polyplacophors83
Cumaceans83
Nebaliaceans81
Bryozoans65
Rotifers57
Annelids-Hirundinea38
Platyhelminthes27
Birds11
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 429
Northern Snakehead - Channa argus 348
quagga mussel - Dreissena rostriformis 330
Silver Carp - Hypophthalmichthys molitrix 309
Black Carp - Mylopharyngodon piceus 306
Bighead Carp - Hypophthalmichthys nobilis 301
Round Goby - Neogobius melanostomus 270
Ruffe - Gymnocephalus cernua 247
lionfish - Pterois volitans/miles 152
hydrilla - Hydrilla verticillata 26
Rusty Crayfish - Faxonius rusticus 24
dioecious hydrilla - Hydrilla verticillata [dioecious] 23
monoecious hydrilla - Hydrilla verticillata [monoecious] 23
Red Swamp Crayfish - Procambarus clarkii 21
floating water hyacinth - Pontederia crassipes 21
giant salvinia - Salvinia molesta 19
starry stonewort - Nitellopsis obtusa 19
water chestnut - Trapa natans 18
water chestnut - Trapa bispinosa 18
Cuban Treefrog - Osteopilus septentrionalis 13
New Zealand mudsnail - Potamopyrgus antipodarum 3
red - Melanoides tuberculata 2
Alabama Bass - Micropterus henshalli 1
African Jewelfish - Hemichromis letourneuxi 1
flowering rush - Butomus umbellatus 1
Asian clam - Corbicula fluminea 1
Northern Pike - Esox lucius 1
red devil - Amphilophus labiatus 1
giant applesnail - Pomacea maculata 1
Midas Cichlid - Amphilophus citrinellus 1
eastern happy - Astatotilapia calliptera 1
channeled applesnail - Pomacea canaliculata 1
Chanchita - Cichlasoma dimerus 1
Arizona Treefrog - Hyla wrightorum 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
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
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 [4/22/2021].

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.