Alert System User Statistics



Total Users
1004

StateSubscribers
California217
New York207
Florida199
Pennsylvania192
Oregon189
Texas178
Wisconsin177
Washington175
Michigan169
Nevada166
Illinois165
Minnesota161
Idaho160
Louisiana160
Ohio160
Alabama155
Indiana152
Montana149
Mississippi147
Colorado144
Vermont143
North Carolina143
Massachusetts143
Georgia142
Wyoming141
Arizona141
New Hampshire141
Virginia141
New Jersey139
Maine137
Maryland137
Utah136
Connecticut135
Alaska135
Arkansas133
South Carolina129
Oklahoma128
Iowa127
Rhode Island127
Missouri125
Delaware125
West virginia125
Hawaii123
Tennessee123
Kansas122
Kentucky120
South Dakota117
New Mexico117
North Dakota115
Nebraska111
District of Columbia106
Puerto Rico93
GroupSubscribers
Fishes382
Marine Fishes375
Mollusks-Bivalves308
Crustaceans-Crayfish259
Mollusks-Gastropods257
Amphibians-Frogs228
Mammals218
Reptiles-Snakes215
Crustaceans-Crabs212
Amphibians-Salamanders209
Reptiles-Turtles207
Crustaceans-Shrimp199
Plants197
Crustaceans-Amphipods184
Crustaceans-Copepods183
Crustaceans-Cladocerans180
Reptiles-Crocodilians177
Crustaceans-Mysids176
Mollusks-Cephalopods176
Crustaceans-Isopods170
Reptiles-Lizards153
Coelenterates-Hydrozoans139
Annelids-Oligochaetes136
Crustaceans-Barnacles135
Entoprocts130
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Tunicates96
Coelenterates-Scyphozoan93
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans53
Rotifers44
Annelids-Hirundinea24
Platyhelminthes15
Birds2
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 404
Northern Snakehead - Channa argus 334
quagga mussel - Dreissena rostriformis 308
Silver Carp - Hypophthalmichthys molitrix 295
Black Carp - Mylopharyngodon piceus 292
Bighead Carp - Hypophthalmichthys nobilis 289
Round Goby - Neogobius melanostomus 256
Ruffe - Gymnocephalus cernua 236
lionfish - Pterois volitans/miles 144
hydrilla - Hydrilla verticillata 7
water chestnut - Trapa bispinosa 6
Rusty Crayfish - Faxonius rusticus 6
dioecious hydrilla - Hydrilla verticillata [dioecious] 6
monoecious hydrilla - Hydrilla verticillata [monoecious] 6
floating waterhyacinth - Pontederia crassipes 6
giant salvinia - Salvinia molesta 6
starry stonewort - Nitellopsis obtusa 6
water chestnut - Trapa natans 5
Red Swamp Crayfish - Procambarus clarkii 5
Cuban Treefrog - Osteopilus septentrionalis 4
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 [1/22/2020].

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.