Alert System User Statistics



Total Users
1126

StateSubscribers
California221
New York208
Florida200
Oregon197
Pennsylvania195
Washington189
Wisconsin176
Texas173
Michigan172
Idaho171
Nevada164
Minnesota164
Illinois162
Ohio160
Louisiana155
Montana152
Indiana151
Alabama147
Colorado146
Wyoming145
North Carolina143
New Jersey142
Maryland142
Mississippi141
Georgia141
Utah141
Virginia141
Massachusetts140
Arizona138
New Hampshire137
Vermont136
Alaska136
Maine135
Connecticut131
Delaware129
Iowa128
Arkansas127
West virginia127
South Carolina127
Missouri124
Oklahoma124
Kansas122
Tennessee122
Hawaii122
Rhode Island122
North Dakota118
New Mexico118
South Dakota116
Kentucky114
Nebraska111
District of Columbia107
Puerto Rico93
GroupSubscribers
Fishes378
Marine Fishes336
Mollusks-Bivalves301
Crustaceans-Crayfish250
Mollusks-Gastropods246
Amphibians-Frogs210
Crustaceans-Crabs202
Mammals202
Reptiles-Snakes201
Plants198
Amphibians-Salamanders194
Reptiles-Turtles192
Crustaceans-Shrimp183
Mollusks-Cephalopods169
Reptiles-Crocodilians166
Crustaceans-Copepods164
Crustaceans-Amphipods162
Crustaceans-Cladocerans158
Crustaceans-Isopods152
Crustaceans-Mysids151
Reptiles-Lizards149
Crustaceans-Barnacles123
Annelids-Oligochaetes121
Coelenterates-Hydrozoans121
Entoprocts113
Coelenterates-Scyphozoan86
Mollusks-Nudibranchs82
Crustaceans-Lobsters75
Sponges71
Tunicates69
Crustaceans-Ostracods67
Bryozoans64
Annelids-Polychaetes63
Coelenterates-Anthozoan61
Ectoprocts59
Cumaceans57
Polyplacophors56
Nebaliaceans56
Rotifers55
Annelids-Hirundinea43
Platyhelminthes30
Algae26
Amphibians-Caecilians21
Birds10
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 426
Northern Snakehead - Channa argus 342
quagga mussel - Dreissena bugensis 341
Silver Carp - Hypophthalmichthys molitrix 309
Bighead Carp - Hypophthalmichthys nobilis 300
Black Carp - Mylopharyngodon piceus 298
Round Goby - Neogobius melanostomus 260
Ruffe - Gymnocephalus cernua 231
lionfish - Pterois volitans/miles 148
hydrilla - Hydrilla verticillata 69
Rusty Crayfish - Faxonius rusticus 68
Red Swamp Crayfish - Procambarus clarkii 63
monoecious hydrilla - Hydrilla verticillata 60
dioecious hydrilla - Hydrilla verticillata 58
common water - Eichhornia crassipes 53
starry stonewort - Nitellopsis obtusa 50
giant salvinia - Salvinia molesta 44
water chestnut - Trapa bispinosa 44
water chestnut - Trapa natans 40
Cuban Treefrog - Osteopilus septentrionalis 33
New Zealand mudsnail - Potamopyrgus antipodarum 6
Grass Carp - Ctenopharyngodon idella 4
flowering rush - Butomus umbellatus 4
green crab - Carcinus maenas 4
Brazilian waterweed - Egeria densa 3
parrot feather - Myriophyllum aquaticum 3
red - Melanoides tuberculata 3
variable - Myriophyllum heterophyllum 3
Eurasian watermilfoil - Myriophyllum spicatum 3
giant applesnail - Pomacea maculata 2
yellow floating - Nymphoides peltata 2
Asian clam - Corbicula fluminea 2
Blue Catfish - Ictalurus furcatus 2
Chinese mitten crab - Eriocheir sinensis 2
a calanoid copepod - Eurytemora affinis 1
Australian redclaw crayfish - Cherax quadricarinatus 1
Freshwater Tubenose Goby - Proterorhinus semilunaris 1
East Asian river prawn - Macrobrachium nipponense 1
curly - Potamogeton crispus 1
Sea Lamprey - Petromyzon marinus 1
Lowland Cichlid - Herichthys carpintis 1
hybrid watermilfoil - Myriophyllum sibiricum × spicatum 1
European ear snail - Radix auricularia 1
Spotted Bass - Micropterus punctulatus 1
holly - Najas marina 1
clade C hydrilla - Hydrilla verticillata 1
mud bithynia - Bithynia tentaculata 1
floating primrose - Ludwigia peploides 1
purple loosestrife - Lythrum salicaria 1
unidentified rams - Helisoma sp. 1
Virile Crayfish - Faxonius virilis 1
suckermouth catfish - Hypostomus sp. 1
spiny waterflea - Bythotrephes longimanus 1
brittle waternymph - Najas minor 1
Chinese mysterysnail - Cipangopaludina chinensis 1
Cane Toad - Rhinella marina 1
Suckermouth Catfish - Hypostomus plecostomus 1
Regal Demoiselle - Neopomacentrus cyanomos 1
Jaguar Guapote - Parachromis managuensis 1
red discus - Symphysodon discus 1
Northern Pike - Esox lucius 1
Panther Grouper - Chromileptes altivelis 1
cutleaf watermilfoil - Myriophyllum pinnatum 1
Carolina fanwort - Cabomba caroliniana 1
Nile perch - Lates niloticus 1
Tanganyika lates - Lates angustifrons 1
Prussian carp - Carassius gibelio 1
African Jewelfish - Hemichromis letourneuxi 1
floatingheart - Nymphoides sp. 1
fishhook waterflea - Cercopagis pengoi 1
channeled applesnail - Pomacea canaliculata 1
common reed - Phragmites australis 1
American white waterlily - Nymphaea odorata 1
Chanchita - Cichlasoma dimerus 1
waterwheel plant - Aldrovanda vesiculosa 1
Alabama Bass - Micropterus henshalli 1
Goldline Snakehead - Channa aurolineata 1
Arizona Treefrog - Dryophytes wrightorum 1
ranae - Hydrocharis morsus1
Midas Cichlid - Amphilophus citrinellus 1
eastern happy - Astatotilapia calliptera 1
red devil - Amphilophus labiatus 1
water milfoil - Myriophyllum sp. 1
Flathead Catfish - Pylodictis olivaris 1
bigeye lates - Lates mariae 1
American Bullfrog - Lithobates catesbeianus 1
Grass Carp (diploid) - Ctenopharyngodon idella 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. [2023]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [9/27/2023].

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 general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.