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Curly leaf pondweed caught on a fish hook

ANS Species List

Plants | Fish | Bivalves | Invertebrates | Pathogens

The North Dakota Game and Fish Department, with input from members of the Aquatic Invasive Species Committee, has created a listing of North Dakota aquatic nuisance species. The official list includes biota considered a threat to the state’s waters; these ANS have caused known irreversible ecologic and/or economic consequences elsewhere.

Negative impacts ANS may have on native North Dakota biota are likely given the following:

  1. North Dakota’s climate and habitats appear favorable to the ANS,
  2. the ANS has the potential to establish a viable population in North Dakota waters,
  3. the ANS is likely to spread within North Dakota waters if a pioneering population becomes established, and
  4. there are one or more existing populations of the ANS close to North Dakota and/or in a few instances, the ANS already occurs in the state.

The ANS list for North Dakota is inclusive to any hybrids or varieties of the species listed below.

The North Dakota ANS list will be reviewed annually and adjustments will be made as deemed necessary. Revisions may include the addition of federally prohibited species, the deletion of species which are no longer considered threats to North Dakota’s aquatic environments, or the addition of species which have become a greater concern regarding the potential to establish and become detrimental in North Dakota’s waters.

North Dakota ANS are classified for permitting purposes. The permitting system is based on the need to control movement into or within North Dakota and allows for traditional use of select aquatic species. See ANS Classification System and Associated Permitting for details of the permitting system.

* Denotes a species that has been documented in North Dakota within the past five years and thought to still be present.

** Denotes a species last documented in North Dakota more than five years ago and no longer thought to be present


ANS Plant Species
Common Name Scientific Name Class Species Information
(click image to view)
* Curly leaf pondweed Potamogeton crispus 2 Curly leaf pondweed
* Eurasian watermilfoil Myriophyllum spicatum 2 Eurasian Milfoil
* Flowering rush Butomus umbellatus 2 Flowering Rush
Didymo or rock snot Didymosphenia geminata 1 Didymo or rock snot


ANS Fish Species
Common Name Scientific Name Class Species Information
(click image to view)
genera Channa and Parachanna (or their generic synonyms of Bostrychoides, Ophicephalus, Ophiocephalus, and Parophiocephalus) of the Family Channidae, including but limited to:
Northern snakehead Channa argus 1 Northern snakehead
Blotched snakehead Channa maculata 1 Blotched snakehead
Bullseye snakehead Channa marulius 1 bullseye-snakehead
Giant snakehead Channa micropeltes 1 giant-snakehead
* Silver carp Hypophthalmichthys molitrix 3 Silver carp
* Bighead carp Hypophthalmichthys nobilis 3 Bighead carp
Black carp Mylopharyngodon piceus 1 Black carp
* Grass carp Ctenopharyngodon idella 3 Grass carp
* Common carp Cyprinus carpio 3 Common carp
European rudd Scardinius erythrophthalmus 1 european-rud
Round goby Neogobius melanostomus 1 Round goby
Tubenose goby Proterorhinus semilunaris 1 tubenose-goby
Eurasian ruffe Gymnocephalus cernuus 1 Eurasian Ruffe


(e.g. mussels, clams, snails)

ANS Bivalve Species
Common Name Scientific Name Class Species Information
(click image to view)
Golden clam Corbicula fluminea 1 Asian clam
* Zebra mussel Dreissena polymorpha 1 Zebra mussel
Quagga mussel Dreissena bugensis 1 Quagga mussel<
New Zealand mudsnail Potamopyrgus antipodarum 1 New Zealand mudsnail
Faucet snail Bithynia tentaculata 1 Faucet Snail


(i.e. crayfish and zooplankton)

ANS Invertebrate Species
Type Common Name Scientific Name Class Species Information
(click image to view)
Crayfish Rusty crayfish Orconectes rusticus 1 Rusty crayfish
Amphipod Scud Echinogammarus ischnus 1 Species Information
Zooplankton Fishhook waterflea Cercopagis pengoi 1 Fishhook water flea
Zooplankton Spiny waterflea Bythotrephes cederstroemi 1 Spiny water flea


(i.e. viruses, bacteria, parasites)

ANS Pathogens
Type Common Name Scientific Name Class
Viruses Infectious Hematopoietic Necrosis Virus IHNV 1
Viruses Infectious Pancreatic Necrosis Virus IPNV 1
Viruses Infectious Salmon Anemia Virus ISAV 1
Viruses Koi Herpes Virus KHV 1
Viruses Channel Catfish Virus CCV 1
Viruses Largemouth Bass Virus LMBV 1
Viruses Viral Hemorrhagic Septicemia Virus VHSV 1
Viruses White Sturgeon Herpes Virus – 2 WSHV-2 1
Bacteria Proliferative Kidney Disease PKD 1
Bacteria Edwardsiella ictaluri Enteric septicemia of catfish 1
Bacteria Renibacterium salmoninarum BKD 1
Bacteria Yersinia ruckeri Enteric redmouth disease 1
Parasites Heterosporis sp Parasites 1
Parasites Bothriocephalus opsarichthydis. Syn. Bothriocephalus acheilognathi and Bothriocephalus gowkengensis Asian tapeworm 1

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