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.

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

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

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)

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