These snails are detritivores and eat algae, excess fish food, fish waste and decaying leaves from the bottom of the pond, so will be beneficial.
They are non-native, but non-invasive in ponds, and reproduce slowly. They produce about 30 offspring with a 9-month gestation period (like humans!) over their 2 - 3 year lifespan.
There is apparently some confusion about whether these are the same as Chinese Mystery Snails, as there seem to be a variety of scientific and common names for aquatic snails with similar phenotypes.
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| Male - notice the shorter, curled tentacle |
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| Female - both tentacles are straight and even length |
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| trapdoor |
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