FISHING AND BOATING

What are Aquatic Invasive Species?

Aquatic invasive species (AIS) are organisms that are not native and cause significant harm to an ecosystem when introduced. Harmful impacts can occur to municipal water supplies, recreation, agriculture, aquaculture, and other commercial activities.

Aquatic invasive species including amphibians, crustaceans, fish, plants, and mollusks are currently present in Wyoming, most notably the New Zealand mudsnail and Asian clam. While these species cause problems and need to be controlled, the most significant known threat to Wyoming is from zebra and quagga mussels based on their proximity and demonstrated impacts in neighboring states.

Wyoming's 5 most UNWANTED Aquatic Invasive Species

Click here to see an interactive map of locations of known AIS occurrences in Wyoming.
A list of waters suspect or positive for invasive mussels and other information is available here (Suspect or Positive Waters)

Zebra/Quagga Mussel