Alert System User Statistics



Total Users
1010

StateSubscribers
California220
New York207
Florida199
Pennsylvania193
Oregon191
Wisconsin178
Texas178
Washington177
Michigan170
Nevada167
Illinois166
Minnesota162
Idaho162
Ohio161
Louisiana160
Alabama155
Indiana153
Montana151
Mississippi147
Colorado146
Vermont143
North Carolina143
Massachusetts143
Wyoming143
Georgia142
Arizona142
New Hampshire141
Virginia141
New Jersey139
Utah138
Maine137
Alaska137
Maryland137
Connecticut135
Arkansas134
Oklahoma129
South Carolina129
Iowa128
Rhode Island127
Missouri126
Delaware126
West virginia126
Hawaii125
Tennessee124
Kansas123
Kentucky121
South Dakota119
New Mexico118
North Dakota117
Nebraska113
District of Columbia107
Puerto Rico94
GroupSubscribers
Fishes385
Marine Fishes377
Mollusks-Bivalves311
Crustaceans-Crayfish262
Mollusks-Gastropods259
Amphibians-Frogs231
Mammals220
Reptiles-Snakes217
Crustaceans-Crabs215
Amphibians-Salamanders212
Reptiles-Turtles209
Crustaceans-Shrimp202
Plants199
Crustaceans-Amphipods187
Crustaceans-Copepods186
Crustaceans-Cladocerans183
Crustaceans-Mysids179
Mollusks-Cephalopods179
Reptiles-Crocodilians179
Crustaceans-Isopods173
Reptiles-Lizards155
Coelenterates-Hydrozoans142
Annelids-Oligochaetes139
Crustaceans-Barnacles138
Entoprocts133
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Coelenterates-Scyphozoan96
Tunicates96
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans56
Rotifers47
Annelids-Hirundinea27
Platyhelminthes18
Birds4
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 408
Northern Snakehead - Channa argus 338
quagga mussel - Dreissena rostriformis 312
Silver Carp - Hypophthalmichthys molitrix 299
Black Carp - Mylopharyngodon piceus 296
Bighead Carp - Hypophthalmichthys nobilis 293
Round Goby - Neogobius melanostomus 258
Ruffe - Gymnocephalus cernua 239
lionfish - Pterois volitans/miles 145
hydrilla - Hydrilla verticillata 11
Rusty Crayfish - Faxonius rusticus 10
Red Swamp Crayfish - Procambarus clarkii 9
monoecious hydrilla - Hydrilla verticillata [monoecious] 9
dioecious hydrilla - Hydrilla verticillata [dioecious] 9
floating waterhyacinth - Pontederia crassipes 8
water chestnut - Trapa bispinosa 8
giant salvinia - Salvinia molesta 8
starry stonewort - Nitellopsis obtusa 8
water chestnut - Trapa natans 7
Cuban Treefrog - Osteopilus septentrionalis 6
Arizona Treefrog - Hyla wrightorum 1
New Zealand mudsnail - Potamopyrgus antipodarum 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 [4/1/2020].

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.