Alert System User Statistics



Total Users
995

StateSubscribers
California200
Florida197
New York196
Oregon186
Washington182
Pennsylvania181
Michigan172
Texas169
Idaho167
Wisconsin165
Minnesota159
Illinois157
Louisiana157
Ohio157
Nevada152
Indiana149
Alabama148
Montana146
Mississippi145
Maryland145
Georgia143
Colorado143
North Carolina142
Virginia142
Wyoming142
Massachusetts140
New Jersey138
Utah136
New Hampshire136
Maine135
Vermont133
Connecticut132
South Carolina132
Alaska131
Arizona131
Tennessee130
Delaware130
Missouri129
Kansas128
Arkansas128
Iowa128
West virginia128
Oklahoma126
Rhode Island124
New Mexico122
Kentucky122
North Dakota118
Hawaii118
South Dakota117
Nebraska115
District of Columbia113
Puerto Rico95
GroupSubscribers
Fishes346
Marine Fishes293
Mollusks-Bivalves286
Mollusks-Gastropods240
Crustaceans-Crayfish239
Amphibians-Frogs204
Crustaceans-Crabs198
Plants196
Mammals196
Reptiles-Turtles194
Reptiles-Snakes193
Amphibians-Salamanders187
Crustaceans-Shrimp183
Mollusks-Cephalopods172
Reptiles-Crocodilians163
Crustaceans-Copepods160
Crustaceans-Amphipods157
Crustaceans-Isopods153
Crustaceans-Cladocerans153
Reptiles-Lizards150
Crustaceans-Mysids146
Crustaceans-Barnacles122
Coelenterates-Hydrozoans120
Annelids-Oligochaetes118
Entoprocts109
Coelenterates-Scyphozoan90
Bryozoans75
Mollusks-Nudibranchs67
Rotifers64
Coelenterates-Anthozoan61
Crustaceans-Lobsters57
Tunicates56
Sponges56
Annelids-Hirundinea54
Crustaceans-Ostracods52
Algae51
Annelids-Polychaetes50
Ectoprocts47
Platyhelminthes44
Cumaceans43
Polyplacophors43
Nebaliaceans43
Amphibians-Caecilians42
Nematodes11
Birds6
SpeciesNameSubscribers
zebra mussel - Dreissena polymorpha 383
Northern Snakehead - Channa argus 323
quagga mussel - Dreissena rostriformis 312
Silver Carp - Hypophthalmichthys molitrix 282
Bighead Carp - Hypophthalmichthys nobilis 274
Black Carp - Mylopharyngodon piceus 274
Round Goby - Neogobius melanostomus 244
Ruffe - Gymnocephalus cernua 214
lionfish - Pterois volitans/miles 143
hydrilla - Hydrilla verticillata 104
Rusty Crayfish - Faxonius rusticus 101
Red Swamp Crayfish - Procambarus clarkii 101
wandering hydrilla - Hydrilla verticillata 90
whorled hydrilla - Hydrilla verticillata 87
common water - Eichhornia crassipes 82
starry stonewort - Nitellopsis obtusa 80
giant salvinia - Salvinia molesta 72
water chestnut - Trapa bispinosa 68
water chestnut - Trapa natans 67
Cuban Treefrog - Osteopilus septentrionalis 52
New Zealand mudsnail - Potamopyrgus antipodarum 10
yellow floating - Nymphoides peltata 6
Eurasian watermilfoil - Myriophyllum spicatum 6
Golden Mussel - Limnoperna fortunei 5
parrot feather - Myriophyllum aquaticum 5
Grass Carp - Ctenopharyngodon idella 5
flowering rush - Butomus umbellatus 4
Brazilian waterweed - Egeria densa 4
marbled crayfish - Procambarus virginalis 4
green crab - Carcinus maenas 4
Australian redclaw crayfish - Cherax quadricarinatus 3
Chinese mysterysnail - Cipangopaludina chinensis 3
freshwater golden clam - Corbicula fluminea 3
Blue Catfish - Ictalurus furcatus 3
red - Melanoides tuberculata 3
variable - Myriophyllum heterophyllum 3
Northern Pike - Esox lucius 2
Carolina fanwort - Cabomba caroliniana 2
Prussian carp - Carassius gibelio 2
Flathead Catfish - Pylodictis olivaris 2
brittle waternymph - Najas minor 2
Sea Lamprey - Petromyzon marinus 2
spiny waterflea - Bythotrephes longimanus 2
Virile Crayfish - Faxonius virilis 2
Japanese mysterysnail - Cipangopaludina japonica 2
Chinese mitten crab - Eriocheir sinensis 2
curly - Potamogeton crispus 2
giant applesnail - Pomacea maculata 2
ranae - Hydrocharis morsus2
channeled applesnail - Pomacea canaliculata 2
American white waterlily - Nymphaea odorata 2
Chanchita - Cichlasoma dimerus 1
Alabama Bass - Micropterus henshalli 1
common reed - Phragmites australis 1
fishhook waterflea - Cercopagis pengoi 1
grassy arrowhead - Sagittaria graminea 1
Midas Cichlid - Amphilophus citrinellus 1
eastern happy - Astatotilapia calliptera 1
West Indian spongeplant - Limnobium laevigatum 1
waterwheel plant - Aldrovanda vesiculosa 1
Goldline Snakehead - Channa aurolineata 1
Arizona Treefrog - Dryophytes wrightorum 1
Western Mosquitofish - Gambusia affinis 1
red devil - Amphilophus labiatus 1
water milfoil - Myriophyllum sp. 1
White River crawfish - Procambarus acutus 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
a calanoid copepod - Eurytemora affinis 1
mud bithynia - Bithynia tentaculata 1
axe - Xenostrobus securis 1
Yellow Bass - Morone mississippiensis 1
anchored waterhyacinth - Eichhornia azurea 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
unidentified rams - Helisoma sp. 1
suckermouth catfish - Hypostomus sp. 1
Chinese pond mussel - Sinanodonta woodiana 1
White Perch - Morone americana 1
Lowland Cichlid - Herichthys carpintis 1
hybrid watermilfoil - Myriophyllum sibiricum × spicatum 1
Spotted Bass - Micropterus punctulatus 1
European ear snail - Radix auricularia 1
holly - Najas marina 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
Threadfin Shad - Dorosoma petenense 1
Cuban bulrush - Cyperus blepharoleptos 1
Panther Grouper - Chromileptes altivelis 1
Allegheny crayfish - Faxonius obscurus 1
Rudd - Scardinius erythrophthalmus 1
Tanganyika lates - Lates angustifrons 1
Asian Swamp Eel - Monopterus albus 1
African Jewelfish - Hemichromis letourneuxi 1
floatingheart - Nymphoides sp. 1
cutleaf watermilfoil - Myriophyllum pinnatum 1
Nile perch - Lates niloticus 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 [5/14/2025].

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.




OSZAR »