Aquatic Invasive Species

Aquatic Invasive Species are any  exotic, nonnative, or new to the area aquatic organisms that live primarily in water and pose a significant threat to the aquatic resources, water supplies, or water infrastructure of this State. They are found in habitats that are covered with water all or part of every year. In Nebraska, aquatic habitats are freshwater habitats like rivers, streams, lakes, marshes, wetlands, and swamps. With no natural enemies to keep their population in check and their ability to outcompete Nebraska’s native species for food and other resources, aquatic invasive species can become widespread in a waterbody quickly.

Plants

(algae, floating plants, submersed plants, and emergent plants)

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A closeup of sericea lespedeza (Lespedeza cuneata).

Photo: Eurasian watermilfoil (Myriophyllum spicatum). Credit: Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Animals

(insects, reptiles, mollusks, crustaceans, and amphibians)

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Rusty crayfish (Faxonius rusticus)

Photo: Rusty crayfish (Faxonius rusticus). 
Credit: United States Geological Survey (USGS) , US Geological Survey, Bugwood.org

Fish

(cold-blooded animals with fins that breathe through gills)

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Round goby (Neogobius melanostomus).

Photo: Round goby (Neogobius melanostomus). Credit: Eric Engbretson, US Fish and Wildlife Service, Bugwood.org

Pathogens and Diseases

(disease-causing molds, fungi, bacteria, and viruses)

Whirling disease (Myxobolus cerebralis)

Photo: Whirling disease (Myxobolus cerebralis). Credit: Alberta Environment and Parks , Bugwood.org