Alert System User Statistics



Total Users
973

StateSubscribers
California215
New York203
Florida197
Pennsylvania191
Oregon189
Wisconsin175
Texas174
Washington173
Michigan167
Nevada165
Illinois162
Minnesota159
Ohio159
Idaho158
Louisiana158
Alabama153
Indiana149
Montana148
Mississippi146
Massachusetts143
Colorado143
Vermont143
North Carolina141
New Hampshire141
Arizona141
Virginia140
Wyoming140
Georgia139
New Jersey139
Maine137
Maryland137
Utah136
Connecticut135
Alaska135
Arkansas132
Rhode Island127
Oklahoma126
Iowa125
Delaware125
West virginia125
South Carolina125
Missouri124
Hawaii123
Tennessee122
Kansas121
Kentucky118
South Dakota116
New Mexico115
North Dakota114
Nebraska110
District of Columbia106
Puerto Rico92
GroupSubscribers
Fishes374
Mollusks-Bivalves302
Crustaceans-Crayfish257
Mollusks-Gastropods254
Amphibians-Frogs227
Mammals219
Reptiles-Snakes214
Crustaceans-Crabs212
Amphibians-Salamanders208
Reptiles-Turtles207
Crustaceans-Shrimp198
Plants192
Crustaceans-Amphipods184
Crustaceans-Copepods181
Crustaceans-Cladocerans178
Reptiles-Crocodilians176
Mollusks-Cephalopods175
Crustaceans-Mysids174
Crustaceans-Isopods168
Reptiles-Lizards151
Coelenterates-Hydrozoans140
Annelids-Oligochaetes137
Crustaceans-Barnacles136
Entoprocts131
Mollusks-Nudibranchs113
Crustaceans-Lobsters105
Crustaceans-Ostracods98
Sponges98
Tunicates96
Annelids-Polychaetes93
Coelenterates-Scyphozoan92
Coelenterates-Anthozoan88
Ectoprocts87
Polyplacophors84
Cumaceans84
Nebaliaceans82
Bryozoans53
Rotifers44
Annelids-Hirundinea25
Platyhelminthes16
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 397
Northern Snakehead - Channa argus 328
quagga mussel - Dreissena rostriformis 303
Silver Carp - Hypophthalmichthys molitrix 290
Black Carp - Mylopharyngodon piceus 288
Bighead Carp - Hypophthalmichthys nobilis 285
Round Goby - Neogobius melanostomus 252
Ruffe - Gymnocephalus cernua 233
lionfish - Pterois volitans/miles 143
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 [8/18/2019].

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.