Alert System User Statistics



Total Users
1025

StateSubscribers
California225
New York209
Florida201
Pennsylvania198
Oregon193
Wisconsin182
Texas181
Washington179
Michigan174
Nevada173
Illinois169
Minnesota167
Idaho164
Ohio164
Louisiana162
Alabama158
Indiana156
Montana155
Colorado151
Mississippi149
Wyoming148
Arizona147
Massachusetts146
North Carolina146
Georgia145
Virginia144
Vermont144
New Hampshire143
New Jersey143
Utah143
Maryland141
Alaska140
Maine139
Arkansas137
Connecticut137
Oklahoma133
Iowa132
South Carolina132
Missouri131
Delaware130
West virginia129
Rhode Island129
Kansas127
Tennessee127
Hawaii126
Kentucky124
South Dakota123
New Mexico122
North Dakota121
Nebraska117
District of Columbia108
Puerto Rico95
GroupSubscribers
Fishes388
Marine Fishes377
Mollusks-Bivalves315
Crustaceans-Crayfish264
Mollusks-Gastropods263
Amphibians-Frogs234
Mammals221
Crustaceans-Crabs219
Reptiles-Snakes218
Amphibians-Salamanders215
Reptiles-Turtles210
Crustaceans-Shrimp205
Plants203
Crustaceans-Amphipods191
Crustaceans-Copepods188
Crustaceans-Cladocerans186
Crustaceans-Mysids181
Mollusks-Cephalopods180
Reptiles-Crocodilians180
Crustaceans-Isopods175
Reptiles-Lizards158
Coelenterates-Hydrozoans145
Annelids-Oligochaetes142
Crustaceans-Barnacles141
Entoprocts136
Mollusks-Nudibranchs112
Crustaceans-Lobsters105
Coelenterates-Scyphozoan100
Sponges98
Crustaceans-Ostracods98
Tunicates96
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans59
Rotifers51
Annelids-Hirundinea32
Platyhelminthes21
Birds8
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 416
Northern Snakehead - Channa argus 341
quagga mussel - Dreissena rostriformis 317
Silver Carp - Hypophthalmichthys molitrix 302
Black Carp - Mylopharyngodon piceus 299
Bighead Carp - Hypophthalmichthys nobilis 295
Round Goby - Neogobius melanostomus 263
Ruffe - Gymnocephalus cernua 242
lionfish - Pterois volitans/miles 147
hydrilla - Hydrilla verticillata 17
Rusty Crayfish - Faxonius rusticus 15
dioecious hydrilla - Hydrilla verticillata [dioecious] 14
Red Swamp Crayfish - Procambarus clarkii 14
monoecious hydrilla - Hydrilla verticillata [monoecious] 14
giant salvinia - Salvinia molesta 13
floating water hyacinth - Pontederia crassipes 13
water chestnut - Trapa bispinosa 12
starry stonewort - Nitellopsis obtusa 11
water chestnut - Trapa natans 11
Cuban Treefrog - Osteopilus septentrionalis 8
Asian clam - Corbicula fluminea 1
red - Melanoides tuberculata 1
Alabama Bass - Micropterus henshalli 1
giant applesnail - Pomacea maculata 1
channeled applesnail - Pomacea canaliculata 1
Arizona Treefrog - Hyla wrightorum 1
Chinese mitten crab - Eriocheir sinensis 1
a calanoid copepod - Eurytemora affinis 1
New Zealand mudsnail - Potamopyrgus antipodarum 1
Cane Toad - Rhinella marina 1
Regal Demoiselle - Neopomacentrus cyanomos 1
red discus - Symphysodon discus 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. [2020]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [10/29/2020].

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.