new zealand mudsnail
New Zealand Mud Snails grow to about 5mm in length and have brown or black cone-shaped shells that twirl to a point.
These snails can reproduce quickly and reach extremely high densities. They alter the foodweb by consuming algae and plankton.
New Zealand mudsnails can be spread by all water users. They often attach to felt soled waders and fly fishing equipment.
South Dakota Distribution:
New Zealand mudsnails have not been found in South Dakota.