Alert System User Statistics



Total Users
968

StateSubscribers
California213
New York201
Florida195
Pennsylvania189
Oregon187
Texas173
Washington172
Wisconsin171
Michigan165
Nevada163
Illinois159
Minnesota156
Idaho156
Louisiana156
Ohio156
Alabama151
Montana146
Indiana146
Mississippi144
Colorado142
Vermont141
Massachusetts141
Arizona139
North Carolina139
New Hampshire139
Wyoming139
Virginia138
New Jersey137
Georgia137
Maryland136
Utah135
Maine135
Alaska134
Connecticut133
Arkansas130
Oklahoma125
Rhode Island125
Iowa124
Missouri123
Delaware123
West virginia123
South Carolina123
Hawaii122
Kansas120
Tennessee120
Kentucky116
South Dakota115
North Dakota113
New Mexico113
Nebraska109
District of Columbia104
Puerto Rico91
GroupSubscribers
Fishes373
Mollusks-Bivalves301
Crustaceans-Crayfish256
Mollusks-Gastropods252
Amphibians-Frogs225
Mammals217
Reptiles-Snakes211
Crustaceans-Crabs211
Amphibians-Salamanders206
Reptiles-Turtles205
Crustaceans-Shrimp196
Plants190
Crustaceans-Amphipods182
Crustaceans-Copepods181
Crustaceans-Cladocerans178
Reptiles-Crocodilians174
Crustaceans-Mysids173
Mollusks-Cephalopods173
Crustaceans-Isopods168
Reptiles-Lizards150
Coelenterates-Hydrozoans139
Annelids-Oligochaetes136
Crustaceans-Barnacles135
Entoprocts130
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Tunicates96
Annelids-Polychaetes93
Coelenterates-Scyphozoan92
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans52
Rotifers43
Annelids-Hirundinea24
Platyhelminthes15
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 396
Northern Snakehead - Channa argus 325
quagga mussel - Dreissena rostriformis 301
Silver Carp - Hypophthalmichthys molitrix 287
Black Carp - Mylopharyngodon piceus 285
Bighead Carp - Hypophthalmichthys nobilis 282
Round Goby - Neogobius melanostomus 250
Ruffe - Gymnocephalus cernua 231
lionfish - Pterois volitans/miles 142
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 [6/18/2019].

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.