Alert System User Statistics



Total Users
994

StateSubscribers
California217
New York205
Florida200
Pennsylvania192
Oregon190
Wisconsin177
Texas177
Washington175
Michigan169
Nevada166
Illinois165
Minnesota161
Idaho160
Louisiana160
Ohio160
Alabama155
Indiana152
Montana149
Mississippi148
Massachusetts144
Colorado144
Vermont144
North Carolina144
Georgia143
New Hampshire142
Virginia142
Arizona142
Wyoming141
New Jersey140
Maine138
Maryland138
Utah137
Connecticut136
Alaska136
Arkansas133
South Carolina130
Rhode Island128
Iowa127
Oklahoma127
Delaware126
West virginia126
Missouri125
Tennessee124
Hawaii124
Kansas122
Kentucky120
South Dakota117
New Mexico116
North Dakota115
Nebraska111
District of Columbia107
Puerto Rico94
GroupSubscribers
Fishes380
Marine Fishes376
Mollusks-Bivalves306
Crustaceans-Crayfish258
Mollusks-Gastropods256
Amphibians-Frogs229
Mammals220
Reptiles-Snakes216
Crustaceans-Crabs212
Amphibians-Salamanders209
Reptiles-Turtles208
Crustaceans-Shrimp199
Plants196
Crustaceans-Amphipods184
Crustaceans-Copepods182
Crustaceans-Cladocerans179
Reptiles-Crocodilians178
Mollusks-Cephalopods177
Crustaceans-Mysids175
Crustaceans-Isopods169
Reptiles-Lizards153
Coelenterates-Hydrozoans140
Annelids-Oligochaetes137
Crustaceans-Barnacles136
Entoprocts131
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Tunicates96
Coelenterates-Scyphozoan93
Annelids-Polychaetes93
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans54
Rotifers45
Annelids-Hirundinea25
Platyhelminthes16
Birds1
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 400
Northern Snakehead - Channa argus 331
quagga mussel - Dreissena rostriformis 305
Silver Carp - Hypophthalmichthys molitrix 292
Black Carp - Mylopharyngodon piceus 290
Bighead Carp - Hypophthalmichthys nobilis 287
Round Goby - Neogobius melanostomus 254
Ruffe - Gymnocephalus cernua 234
lionfish - Pterois volitans/miles 143
giant salvinia - Salvinia molesta 2
starry stonewort - Nitellopsis obtusa 2
water chestnut - Trapa natans 2
floating waterhyacinth - Pontederia crassipes 2
Red Swamp Crayfish - Procambarus clarkii 2
monoecious hydrilla - Hydrilla verticillata [monoecious] 2
dioecious hydrilla - Hydrilla verticillata [dioecious] 2
hydrilla - Hydrilla verticillata 2
Cuban Treefrog - Osteopilus septentrionalis 2
water chestnut - Trapa bispinosa 2
Rusty Crayfish - Faxonius rusticus 2
Arizona Treefrog - Hyla wrightorum 1
a calanoid copepod - Eurytemora affinis 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. [2019]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/7/2019].

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.