The New Zealand mudsnail (Potamopyrgus antipodarum) is a listed NR40 prohibited invasive species. The small snail can establish large populations that can out-compete native stream insects that serve as food for fish. The mudsnail populations can change the nutrient flows in streams. All of the locations where New Zealand mudsnails have been found in the state are popular for fishing and may also be used by paddlers, trappers and hikers. The spread of New Zealand mudsnails and other invasive species can be stopped by INSPECTING and REMOVING all plants, animals, mud and debris from your equipment, and DRAINING all water from equipment and drying as much as possible.