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new zealand mudsnail


New Zealand


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.

Range Expansion:

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.