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ANS Species List

Last Updated - February, 2013

Zebra mussel

The North Dakota Game and Fish Department, with input from members of the Aquatic Invasive Species Committee (AISC), has created a listing of North Dakota aquatic nuisance species (ND ANS). The official list includes biota considered as 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 ND 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.

ND 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.

Printable List


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Common Name Scientific Name Class Photo
Curly leaf pondweed Potamogeton crispus* 2 Curly leaf pondweed
Eurasian watermilfoil Myriophyllum spicatum* 2 Eurasian Milfoil
Didymo or rock snot Didymosphenia geminata 1 Eurasian Milfoil


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Common Name Scientific Name Class Photo
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 Curly leaf pondweed
Blotched snakehead Channa maculata 1 Photo Unavailable
Bullseye snakehead Channa marulius 1 bullseye-snakehead
Giant snakehead Channa micropeltes 1 giant-snakehead
Silver carp Hypophthalmichthys molitrix* 3 Curly leaf pondweed
Bighead carp Hypophthalmichthys nobilis 1 Curly leaf pondweed
Black carp Mylopharyngodon piceus 1 Curly leaf pondweed
Grass carp Ctenopharyngodon idella** 1 Curly leaf pondweed
Common carp Cyprinus carpio* 3 Curly leaf pondweed
European Rudd Scardinius erythrophthalmus 1 european-rud
Round goby Neogobius melanostomus 1 Curly leaf pondweed
Tubenose goby Proterorhinus marmoratus 1 tubenose-goby
Eurasian Ruffe Gymnocephalus cernuus 1 Curly leaf pondweed


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(e.g. mussels, clams, snails)

Common Name Scientific Name Class Photo
Asian clam Corbicula fluminea 1 Curly leaf pondweed
Zebra mussel Dreissena polymorpha* 1 Curly leaf pondweed
Quagga mussel Dreissena bugensis 1 Curly leaf pondweed
New Zealand mudsnail Potamopyrgus antipodarum 1 Curly leaf pondweed
Faucet snail Bithynia tentaculata 1 Faucet Snail


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(i.e. crayfish and zooplankton)

Type Common Name Scientific Name Class Photo
Crayfish Rusty crayfish Orconectes rusticus 1 Curly leaf pondweed
Amphipod Scud Echinogammarus ischnus 1 Photo Unavailable
Zooplankton Fishhook water flea Cercopagis pengoi 1
  Spiny water flea Bythotrephes cederstroemi 1 Curly leaf pondweed


(i.e. viruses, bacteria, parasites)

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

* - species documented North Dakota within the past five years and thought to still be present.

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