Invasive Species

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Invasive Species:

You may view the available invasive species information below by clicking the icons.

You may sort the table by common, scientific name, or classification by clicking the corresponding table heading.

Chapter NR 40 Classification Key: P=Prohibited; R=Restricted

Classification Common Name Scientific Name Factsheet Map Photo
Gallery		 Lit.
Review		 SAG
Form
Earthworms Acanthodrilidae, Lumbricidae, Megascloedidae spp.      
R Sterlet (3) Acipenser ruthenus      
P Hemlock wooly adelgid Adelges tsugae Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Emerald ash borer Agrilus planipennis Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Crazy worm Amynthas spp., Amynthus spp.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Asian longhorned beetle Anoplophora glabripennis Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Orange-banded arion (slug) Arion Fasciatus      
Garden arion (slug) Arion hortensis      
Chocolate arion (slug) Arion rufus      
Dusky arion (slug) Arion subfuscus      
P Faucet snail Bithynia tentaculata      
P Spiny waterflea Bythotrephes cederstroemi Click to view factsheet for this species.   Click to view Lit. Review for this species.  
Wolf/Dog hybrids Canis sp. Click to view factsheet for this species.      
R Goldfish *(3) Carassius auratus      
European goldfinch Carduelis carduelis   Click to view Lit. Review for this species. Click to view SAG Form for this species.
House finch Carpodacus mexicanus   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Killer algae Caulerpa taxifolia   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Oak wilt Ceratocystis fagacearum Click to view factsheet for this species.      
P Fishhook waterflea Cercopagis pengoi Click to view factsheet for this species.   Click to view Lit. Review for this species.  
P Giant snakehead Channa micropeltes Click to view factsheet for this species.   Click to view Lit. Review for this species.  
R Chinese mystery snail Cipangopaludina chinensis   Click to view Lit. Review for this species.  
Japanese mystery snail Cipangopaludina japonica   Click to view Lit. Review for this species.  
Pigeon, rock dove Columba livia   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Asian clam Corbicula fluminea   Click to view Lit. Review for this species.  
Brown gardensnail Cornu aspersum      
White pine blister rust Cronartium ribicola   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Scale associated with beech bark disease Cryptococcus fagisuga Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Grass carp Ctenopharyngodon idella   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Mute swan Cygnus olor Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Cylindro (cyanobacteria) Cylindrospermopsis raciborskii   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Red shiner Cyprinella lutrensis   Click to view Lit. Review for this species.  
R Common carp Cyprinus carpio Click to view factsheet for this species.   Click to view Lit. Review for this species.  
R Koi carp *(3) Cyprinus carpio      
P Water flea Daphnia lumholtzi   Click to view Lit. Review for this species.  
Meadow slug Deroceras leave      
Gray fieldslug Deroceras reticulatum      
P Didymo or rock snot Didymoshpenia geminata   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Quagga mussels Dreissena bugensis Click to view factsheet for this species.   Click to view Lit. Review for this species.  
R Zebra mussel Dreissena polymorpha Click to view factsheet for this species.   Click to view Lit. Review for this species.  
P Chinese mitten crabs Eriocheir sinensi   Click to view Lit. Review for this species.  
English sparrow, house sparrow Fringilla domestica   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Western mosquitofish Gambusia affinis   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Eastern mosquitofish Gambusia holbrooki   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Three-spine stickleback Gasterosteus aculeatus   Click to view Lit. Review for this species.  
R Ruffe Gymnocephalus cernuus Click to view factsheet for this species.   Click to view Lit. Review for this species.  
Asian lady beetle Harmonia axyridis Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Escargot (snail) Helix pomatia      
P Bloody shrimp Hemimysis anomala   Click to view Lit. Review for this species.  
P Silver carp Hypophthalmichthys molitrix Click to view factsheet for this species.   Click to view Lit. Review for this species.  
P Bighead carp Hypophthalmichthys nobilis Click to view factsheet for this species.   Click to view Lit. Review for this species.  
R Redear sunfish (2) Lepomis microlophus      
White tailed jack rabbit Lepus townsendii   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Ide (3) Leuciscus idus   Click to view Lit. Review for this species.  
Yellow gardenslug Limax flavus      
Giant gardenslug Limax maximus      
R Gypsy moth Lymantria dispar Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Asian Gypsy moth Lymantria dispar (Asian race)   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Forest tent caterpillar Malacosoma disstria Click to view factsheet for this species.      
Stone, beech marten Martes foina   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Weather loach (3) Misgurnus anguillicaudatus      
R White perch Morone americana Click to view factsheet for this species.   Click to view Lit. Review for this species.  
House mouse Mus musculus   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Monk, Quaker parakeet or parrot Myiopsitta monachus   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Black carp Mylopharyngodon piceus   Click to view Lit. Review for this species.  
R Chinese hi-fin banded shark (3) Myxocyprinus asiaticus      
R Round goby Neogobius melanostomus Click to view factsheet for this species.   Click to view Lit. Review for this species.  
P Starry stonewort (alga) Nitellopsis obtusa   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Pink salmon (2) Oncorhynchus gorbuscha      
R Coho salmon (2) Oncorhynchus kisutch      
R Rainbow trout (2) Oncorhynchus mykiss      
R Chinook salmon (2) Oncorhynchus tshawytscha      
Winter moth Operophtera brumata      
R Rusty crayfish Orconectes rusticus Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Rainbow smelt Osmerus mordax Click to view factsheet for this species.   Click to view Lit. Review for this species.  
Cellar glass-snail Oxychilus cellarius      
Dark-bodied glass-snail Oxychilus draparnaudi      
Great tit Parus major   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Eurasian tree sparrow Passer montanus   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Gray partridge Perdix perdix   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Sea lamprey Petromyzon marinus Click to view factsheet for this species.   Click to view Lit. Review for this species.  
Cell from hell; phantom dinoflagellate Pfiesteria piscicida   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Ring-necked pheasant Phasianus colchicus   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Sudden oak death pathogen Phytophthora ramorum Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Southern flatcoil (snail) Polygyracereolus cereolus      
P New Zealand mudsnail Potamopyrgus antipodarum Click to view factsheet for this species.   Click to view Lit. Review for this species.  
P Red swamp crayfish Procambarus clarkii Click to view factsheet for this species.      
R Tubenose Goby Proterorhinus marmoratus   Click to view Lit. Review for this species.  
P Golden alga Prymneisum parvum   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Norway rat Rattus norvegicus   Click to view Lit. Review for this species. Click to view SAG Form for this species.
R Bitterling (3) Rhodeus spp.      
R Atlantic salmon (2) Salmo salar      
R Brown trout (2) Salmo trutta      
R Arctic char (2) Salvelinus alpinus      
R Tiger trout (2) Salvelinus fontinalis x Salmo trutta      
P Zander Sander lucioperca   Click to view Lit. Review for this species.  
P Rudd Scardinius erythrophthalmus   Click to view Lit. Review for this species.  
Sirex wood wasp Sirex noctilio      
Butternut canker pathogen Sirococcus clavigignenti-juglandacearum   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Novel cyanobacterial epiphyte of order Stigonematales Stigonematales spp.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
Eurasian collared dove Streptopelia decaocto   Click to view Lit. Review for this species. Click to view SAG Form for this species.
European starling Sturnus vulgaris   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Feral domestic swine Sus domestica Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Russian boar & other wild swine Sus scrofa Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P Snakehead family Synbranchidea   Click to view Lit. Review for this species.  
R Tilapia Tilapia spp.      
P Tench Tinca tinca   Click to view Lit. Review for this species.  
R Red-eared slider with a carapace (top shell) length of less than 4 inches Trachemys scripta elegans   Click to view Lit. Review for this species. Click to view SAG Form for this species.
P (no common name) Ulva (Enteromorpha) spp.   Click to view Lit. Review for this species. Click to view SAG Form for this species.

All other nonnative terrestrial and aquatic vertebrates (except fish and nonnative crayfish) are not regulated under NR40 but may be regulated under other rules or statutes.

  1. All nonnative fish and crayfish are prohibited unless they are not viable in Wisconsin or are on one of three lists:
    1. "Established nonnative fish species and established nonnative crayfish species".
    2. "Nonnative fish species in the aquaculture industry".
    3. "Nonnative viable fish species in the aquarium trade".
  2. The species on those three lists are restricted.
  3. Fish and crayfish are viable if eggs, fry, and adults are capable of surviving in water temperatures below 38C and are capable of surviving in fresh water.
Last Revised: November 9, 2009