Alert System User Statistics



Total Users
1042

StateSubscribers
California228
New York214
Pennsylvania202
Florida202
Oregon194
Wisconsin184
Texas183
Washington180
Michigan176
Nevada173
Illinois170
Minnesota169
Ohio167
Idaho164
Louisiana163
Alabama159
Indiana158
Montana155
Colorado151
Massachusetts150
Mississippi150
Wyoming148
Arizona147
New Jersey147
Vermont147
North Carolina147
New Hampshire147
Georgia146
Virginia145
Maryland144
Utah143
Maine143
Alaska141
Connecticut141
Arkansas137
Oklahoma133
Rhode Island133
South Carolina133
Iowa132
Delaware132
Missouri131
West virginia129
Tennessee128
Kansas127
Hawaii127
Kentucky124
South Dakota123
New Mexico122
North Dakota121
Nebraska117
District of Columbia110
Puerto Rico96
GroupSubscribers
Fishes394
Marine Fishes383
Mollusks-Bivalves319
Crustaceans-Crayfish268
Mollusks-Gastropods267
Amphibians-Frogs238
Mammals224
Crustaceans-Crabs223
Reptiles-Snakes222
Amphibians-Salamanders219
Reptiles-Turtles213
Plants208
Crustaceans-Shrimp208
Crustaceans-Amphipods194
Crustaceans-Copepods191
Crustaceans-Cladocerans189
Crustaceans-Mysids184
Mollusks-Cephalopods184
Reptiles-Crocodilians183
Crustaceans-Isopods178
Reptiles-Lizards161
Coelenterates-Hydrozoans148
Annelids-Oligochaetes145
Crustaceans-Barnacles144
Entoprocts138
Mollusks-Nudibranchs112
Crustaceans-Lobsters105
Coelenterates-Scyphozoan103
Sponges98
Crustaceans-Ostracods98
Tunicates96
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans62
Rotifers54
Annelids-Hirundinea35
Platyhelminthes24
Birds11
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 423
Northern Snakehead - Channa argus 345
quagga mussel - Dreissena rostriformis 324
Silver Carp - Hypophthalmichthys molitrix 306
Black Carp - Mylopharyngodon piceus 303
Bighead Carp - Hypophthalmichthys nobilis 298
Round Goby - Neogobius melanostomus 267
Ruffe - Gymnocephalus cernua 245
lionfish - Pterois volitans/miles 150
hydrilla - Hydrilla verticillata 21
Rusty Crayfish - Faxonius rusticus 19
dioecious hydrilla - Hydrilla verticillata [dioecious] 18
Red Swamp Crayfish - Procambarus clarkii 18
monoecious hydrilla - Hydrilla verticillata [monoecious] 18
giant salvinia - Salvinia molesta 16
floating water hyacinth - Pontederia crassipes 16
starry stonewort - Nitellopsis obtusa 15
water chestnut - Trapa natans 15
water chestnut - Trapa bispinosa 15
Cuban Treefrog - Osteopilus septentrionalis 11
New Zealand mudsnail - Potamopyrgus antipodarum 2
Cane Toad - Rhinella marina 1
Regal Demoiselle - Neopomacentrus cyanomos 1
red discus - Symphysodon discus 1
Chinese mitten crab - Eriocheir sinensis 1
a calanoid copepod - Eurytemora affinis 1
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


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 [2/26/2021].

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.