Aquatic Invasive Species

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)

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