Alert System User Statistics



Total Users
961

StateSubscribers
California212
New York201
Florida193
Pennsylvania189
Oregon187
Washington172
Texas172
Wisconsin171
Michigan164
Nevada162
Illinois159
Minnesota156
Idaho156
Ohio156
Louisiana155
Alabama150
Montana146
Indiana146
Mississippi143
Colorado142
Vermont141
Massachusetts140
North Carolina139
New Hampshire139
Wyoming139
Virginia138
Arizona138
New Jersey137
Georgia137
Maryland136
Utah135
Maine135
Alaska134
Connecticut133
Arkansas130
Oklahoma125
Rhode Island125
South Carolina123
Missouri123
Iowa123
Delaware123
West virginia123
Hawaii122
Tennessee120
Kansas119
Kentucky116
South Dakota115
North Dakota113
New Mexico113
Nebraska108
District of Columbia104
Puerto Rico91
GroupSubscribers
Fishes369
Mollusks-Bivalves298
Crustaceans-Crayfish255
Mollusks-Gastropods250
Amphibians-Frogs224
Mammals216
Reptiles-Snakes210
Crustaceans-Crabs210
Amphibians-Salamanders205
Reptiles-Turtles204
Crustaceans-Shrimp195
Plants189
Crustaceans-Amphipods182
Crustaceans-Copepods180
Crustaceans-Cladocerans178
Reptiles-Crocodilians173
Crustaceans-Mysids172
Mollusks-Cephalopods171
Crustaceans-Isopods167
Reptiles-Lizards150
Coelenterates-Hydrozoans139
Annelids-Oligochaetes136
Crustaceans-Barnacles133
Entoprocts130
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Tunicates96
Annelids-Polychaetes93
Coelenterates-Scyphozoan92
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans51
Rotifers43
Annelids-Hirundinea24
Platyhelminthes15
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 394
Northern Snakehead - Channa argus 323
quagga mussel - Dreissena rostriformis 299
Silver Carp - Hypophthalmichthys molitrix 285
Black Carp - Mylopharyngodon piceus 283
Bighead Carp - Hypophthalmichthys nobilis 280
Round Goby - Neogobius melanostomus 250
Ruffe - Gymnocephalus cernua 231
lionfish - Pterois volitans/miles 140
regal demoiselle - Neopomacentrus cyanomos 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 [4/25/2019].

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.