Chinese mystery snails are large, golf ball-size snails with a “trapdoor” or operculum. These snails are typically light in color when young and then darken to greenish brown, brown or reddish brown pigmentation as an adult.
Confirmed observations of Chinese mystery snail submitted to the NYS Invasive Species Database. For more information, visit iMapInvasives
Chinese mystery snails inhabit lakes and slow moving rivers.
Threats & Impacts:
Chinese mystery snails can reach high densities and outcompete native species for food and habitat. They are intermediate hosts for parasitic worms and can transmit trematodes that kill waterfowl. Their foul-smelling shells often litter shorelines and clog screens of water intakes.
Once established, very little can be done apart from manual removal for these snails. The best method is prevention by cleaning boats, bait buckets, and gear.