Alert System User Statistics



Total Users
1006

StateSubscribers
California218
New York207
Florida199
Pennsylvania192
Oregon190
Texas178
Wisconsin177
Washington176
Michigan169
Nevada166
Illinois165
Minnesota161
Idaho161
Louisiana160
Ohio160
Alabama155
Indiana152
Montana150
Mississippi147
Colorado145
Vermont143
North Carolina143
Massachusetts143
Georgia142
Wyoming142
Arizona141
New Hampshire141
Virginia141
New Jersey139
Utah137
Maine137
Maryland137
Alaska136
Connecticut135
Arkansas133
South Carolina129
Oklahoma128
Iowa127
Rhode Island127
Missouri125
Delaware125
West virginia125
Hawaii124
Tennessee123
Kansas122
Kentucky120
South Dakota118
New Mexico117
North Dakota116
Nebraska112
District of Columbia106
Puerto Rico93
GroupSubscribers
Fishes383
Marine Fishes376
Mollusks-Bivalves309
Crustaceans-Crayfish260
Mollusks-Gastropods258
Amphibians-Frogs229
Mammals219
Reptiles-Snakes216
Crustaceans-Crabs213
Amphibians-Salamanders210
Reptiles-Turtles208
Crustaceans-Shrimp200
Plants198
Crustaceans-Amphipods185
Crustaceans-Copepods184
Crustaceans-Cladocerans181
Reptiles-Crocodilians178
Crustaceans-Mysids177
Mollusks-Cephalopods177
Crustaceans-Isopods171
Reptiles-Lizards154
Coelenterates-Hydrozoans140
Annelids-Oligochaetes137
Crustaceans-Barnacles136
Entoprocts131
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Tunicates96
Coelenterates-Scyphozoan94
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans54
Rotifers45
Annelids-Hirundinea25
Platyhelminthes16
Birds3
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 406
Northern Snakehead - Channa argus 336
quagga mussel - Dreissena rostriformis 310
Silver Carp - Hypophthalmichthys molitrix 297
Black Carp - Mylopharyngodon piceus 294
Bighead Carp - Hypophthalmichthys nobilis 291
Round Goby - Neogobius melanostomus 257
Ruffe - Gymnocephalus cernua 237
lionfish - Pterois volitans/miles 145
hydrilla - Hydrilla verticillata 9
Rusty Crayfish - Faxonius rusticus 8
giant salvinia - Salvinia molesta 8
starry stonewort - Nitellopsis obtusa 7
water chestnut - Trapa bispinosa 7
Red Swamp Crayfish - Procambarus clarkii 7
monoecious hydrilla - Hydrilla verticillata [monoecious] 7
floating waterhyacinth - Pontederia crassipes 7
dioecious hydrilla - Hydrilla verticillata [dioecious] 7
water chestnut - Trapa natans 6
Cuban Treefrog - Osteopilus septentrionalis 5
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 [2/18/2020].

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.