Alert System User Statistics



Total Users
1020

StateSubscribers
California224
New York208
Florida199
Pennsylvania198
Oregon194
Wisconsin181
Washington180
Texas180
Michigan173
Nevada172
Illinois168
Minnesota166
Idaho165
Ohio163
Louisiana161
Alabama157
Montana155
Indiana155
Colorado151
Wyoming148
Mississippi148
Arizona146
Massachusetts145
North Carolina145
Vermont144
Georgia144
Virginia143
Utah143
New Jersey142
New Hampshire142
Alaska140
Maryland140
Maine139
Arkansas136
Connecticut136
Oklahoma132
Iowa131
South Carolina131
Rhode Island129
Missouri129
Delaware129
West virginia128
Kansas127
Tennessee126
Hawaii126
Kentucky123
South Dakota123
New Mexico122
North Dakota121
Nebraska117
District of Columbia108
Puerto Rico95
GroupSubscribers
Fishes387
Marine Fishes378
Mollusks-Bivalves313
Crustaceans-Crayfish263
Mollusks-Gastropods261
Amphibians-Frogs232
Mammals220
Reptiles-Snakes217
Crustaceans-Crabs217
Amphibians-Salamanders213
Reptiles-Turtles209
Crustaceans-Shrimp204
Plants203
Crustaceans-Amphipods190
Crustaceans-Copepods187
Crustaceans-Cladocerans185
Crustaceans-Mysids180
Mollusks-Cephalopods180
Reptiles-Crocodilians179
Crustaceans-Isopods174
Reptiles-Lizards157
Coelenterates-Hydrozoans144
Annelids-Oligochaetes140
Crustaceans-Barnacles140
Entoprocts135
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Coelenterates-Scyphozoan99
Sponges98
Crustaceans-Ostracods98
Tunicates96
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans58
Rotifers50
Annelids-Hirundinea30
Platyhelminthes20
Birds6
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 414
Northern Snakehead - Channa argus 340
quagga mussel - Dreissena rostriformis 317
Silver Carp - Hypophthalmichthys molitrix 302
Black Carp - Mylopharyngodon piceus 299
Bighead Carp - Hypophthalmichthys nobilis 295
Round Goby - Neogobius melanostomus 262
Ruffe - Gymnocephalus cernua 242
lionfish - Pterois volitans/miles 147
hydrilla - Hydrilla verticillata 15
Rusty Crayfish - Faxonius rusticus 14
Red Swamp Crayfish - Procambarus clarkii 13
monoecious hydrilla - Hydrilla verticillata [monoecious] 12
floating waterhyacinth - Pontederia crassipes 12
dioecious hydrilla - Hydrilla verticillata [dioecious] 12
giant salvinia - Salvinia molesta 12
starry stonewort - Nitellopsis obtusa 11
water chestnut - Trapa bispinosa 11
water chestnut - Trapa natans 10
Cuban Treefrog - Osteopilus septentrionalis 8
New Zealand mudsnail - Potamopyrgus antipodarum 1
Arizona Treefrog - Hyla wrightorum 1
Asian clam - Corbicula fluminea 1
red - Melanoides tuberculata 1
Chinese mitten crab - Eriocheir sinensis 1
a calanoid copepod - Eurytemora affinis 1
giant applesnail - Pomacea maculata 1
channeled applesnail - Pomacea canaliculata 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 [7/2/2020].

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.