Alert System User Statistics



Total Users
1012

StateSubscribers
Florida202
California201
New York200
Oregon187
Pennsylvania185
Washington183
Michigan177
Texas170
Wisconsin169
Idaho169
Ohio164
Minnesota163
Illinois162
Louisiana160
Indiana154
Nevada153
Alabama150
Maryland148
Montana148
Mississippi147
Georgia146
Colorado145
Virginia145
North Carolina144
Wyoming144
Massachusetts142
New Jersey141
New Hampshire138
Utah137
Maine137
Vermont136
Connecticut134
South Carolina134
Delaware133
West virginia133
Alaska133
Tennessee133
Arkansas132
Missouri132
Arizona132
Iowa131
Kansas130
Oklahoma127
Rhode Island126
Kentucky125
New Mexico123
North Dakota121
South Dakota120
Hawaii119
Nebraska118
District of Columbia115
Puerto Rico96
GroupSubscribers
Fishes354
Marine Fishes299
Mollusks-Bivalves291
Crustaceans-Crayfish244
Mollusks-Gastropods243
Amphibians-Frogs208
Plants204
Mammals203
Crustaceans-Crabs202
Reptiles-Turtles198
Reptiles-Snakes197
Amphibians-Salamanders191
Crustaceans-Shrimp186
Mollusks-Cephalopods176
Reptiles-Crocodilians167
Crustaceans-Copepods163
Crustaceans-Amphipods161
Crustaceans-Cladocerans156
Crustaceans-Isopods156
Reptiles-Lizards153
Crustaceans-Mysids149
Crustaceans-Barnacles126
Coelenterates-Hydrozoans123
Annelids-Oligochaetes121
Entoprocts112
Coelenterates-Scyphozoan93
Bryozoans78
Rotifers68
Mollusks-Nudibranchs67
Coelenterates-Anthozoan64
Tunicates59
Annelids-Hirundinea57
Crustaceans-Lobsters57
Algae57
Sponges56
Crustaceans-Ostracods52
Annelids-Polychaetes50
Platyhelminthes48
Ectoprocts47
Amphibians-Caecilians46
Cumaceans43
Polyplacophors43
Nebaliaceans43
Nematodes14
Birds6
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 392
Northern Snakehead - Channa argus 330
quagga mussel - Dreissena rostriformis 320
Silver Carp - Hypophthalmichthys molitrix 290
Bighead Carp - Hypophthalmichthys nobilis 282
Black Carp - Mylopharyngodon piceus 282
Round Goby - Neogobius melanostomus 251
Ruffe - Gymnocephalus cernua 220
lionfish - Pterois volitans/miles 149
hydrilla - Hydrilla verticillata 112
Red Swamp Crayfish - Procambarus clarkii 107
Rusty Crayfish - Faxonius rusticus 107
wandering hydrilla - Hydrilla verticillata 97
whorled hydrilla - Hydrilla verticillata 94
common water - Eichhornia crassipes 90
starry stonewort - Nitellopsis obtusa 87
giant salvinia - Salvinia molesta 78
water chestnut - Trapa bispinosa 74
water chestnut - Trapa natans 73
Cuban Treefrog - Osteopilus septentrionalis 56
New Zealand mudsnail - Potamopyrgus antipodarum 10
Golden Mussel - Limnoperna fortunei 7
Eurasian watermilfoil - Myriophyllum spicatum 6
yellow floating - Nymphoides peltata 6
parrot feather - Myriophyllum aquaticum 5
Grass Carp - Ctenopharyngodon idella 5
Brazilian waterweed - Egeria densa 4
flowering rush - Butomus umbellatus 4
marbled crayfish - Procambarus virginalis 4
green crab - Carcinus maenas 4
Australian redclaw crayfish - Cherax quadricarinatus 3
Chinese mysterysnail - Cipangopaludina chinensis 3
Blue Catfish - Ictalurus furcatus 3
red - Melanoides tuberculata 3
variable - Myriophyllum heterophyllum 3
freshwater golden clam - Corbicula fluminea 3
Prussian carp - Carassius gibelio 2
mosquito fern - Azolla pinnata 2
channeled applesnail - Pomacea canaliculata 2
American white waterlily - Nymphaea odorata 2
Carolina fanwort - Cabomba caroliniana 2
Northern Pike - Esox lucius 2
Flathead Catfish - Pylodictis olivaris 2
brittle waternymph - Najas minor 2
Sea Lamprey - Petromyzon marinus 2
Japanese mysterysnail - Cipangopaludina japonica 2
Chinese mitten crab - Eriocheir sinensis 2
curly - Potamogeton crispus 2
axe - Xenostrobus securis 2
ranae - Hydrocharis morsus2
giant applesnail - Pomacea maculata 2
spiny waterflea - Bythotrephes longimanus 2
Virile Crayfish - Faxonius virilis 2
unidentified rams - Helisoma sp. 1
suckermouth catfish - Hypostomus sp. 1
Chinese pond mussel - Sinanodonta woodiana 1
White Perch - Morone americana 1
hybrid watermilfoil - Myriophyllum × hybridum 1
Cane Toad - Rhinella marina 1
Suckermouth Catfish - Hypostomus plecostomus 1
Regal Demoiselle - Neopomacentrus cyanomos 1
northern hydrilla - Hydrilla verticillata 1
Jaguar Guapote - Parachromis managuensis 1
red discus - Symphysodon discus 1
six petal water primrose - Ludwigia hexapetala 1
West Indian spongeplant - Limnobium laevigatum 1
waterwheel plant - Aldrovanda vesiculosa 1
Western Mosquitofish - Gambusia affinis 1
red devil - Amphilophus labiatus 1
water milfoil - Myriophyllum sp. 1
White River crawfish - Procambarus acutus 1
grassy arrowhead - Sagittaria graminea 1
Midas Cichlid - Amphilophus citrinellus 1
eastern happy - Astatotilapia calliptera 1
fishhook waterflea - Cercopagis pengoi 1
Goldline Snakehead - Channa aurolineata 1
Arizona Treefrog - Dryophytes wrightorum 1
Yellow Bass - Morone mississippiensis 1
anchored waterhyacinth - Eichhornia azurea 1
Eggers' nutrush - Scleria eggersiana 1
a calanoid copepod - Eurytemora affinis 1
Freshwater Tubenose Goby - Proterorhinus semilunaris 1
Brazilian water hyacinth - Eichhornia paniculata 1
crested floating - Nymphoides cristata 1
Freshwater Drum - Aplodinotus grunniens 1
cuchia - Monopterus cuchia 1
East Asian river prawn - Macrobrachium nipponense 1
purple loosestrife - Lythrum salicaria 1
floating primrose - Ludwigia peploides 1
Eastern Mosquitofish - Gambusia holbrooki 1
Lowland Cichlid - Herichthys carpintis 1
tropical nutrush - Scleria microcarpa 1
Spotted Bass - Micropterus punctulatus 1
European ear snail - Radix auricularia 1
water lettuce - Pistia stratiotes 1
holly - Najas marina 1
mud bithynia - Bithynia tentaculata 1
bigeye lates - Lates mariae 1
Southern White River Crayfish - Procambarus zonangulus 1
- Caulerpa prolifera 1
American Bullfrog - Lithobates catesbeianus 1
Grass Carp (diploid) - Ctenopharyngodon idella 1
Allegheny crayfish - Faxonius obscurus 1
Threadfin Shad - Dorosoma petenense 1
Cuban bulrush - Cyperus blepharoleptos 1
cutleaf watermilfoil - Myriophyllum pinnatum 1
Nile perch - Lates niloticus 1
Panther Grouper - Chromileptes altivelis 1
Chanchita - Cichlasoma dimerus 1
common reed - Phragmites australis 1
Alabama Bass - Micropterus henshalli 1
Tanganyika lates - Lates angustifrons 1
Rudd - Scardinius erythrophthalmus 1
Asian Swamp Eel - Monopterus albus 1
African Jewelfish - Hemichromis letourneuxi 1
floatingheart - Nymphoides sp. 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. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [8/29/2025].

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.