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Japanese Water Snail: Japanese Trapdoor or Mystery SnailDate Posted: Sunday, July 17, 2005
Japanese Water Snail: Japanese Trapdoor or Mystery Snail
Viviparus malleatus (aka Viviparus japonicus)

Creating a balance in your pond or large water bowl is always a challenge. The Japanese snail aids in keeping the water clean. They are scavengers and eat fish waste, dead leaves / vegetation, and algae growing on the sides of the pond, pots, plant leaves and stems. They are 'pond friendly' and will not consume or eat plants!

Japanese Snails do not overpopulate ponds as other snails do. They do not lay eggs, but bear live young generally twice a year. One can expect a few offspring per year. The young snails look identical to the adults, but they are very tiny. Generally in 3-5 years Japanese Snails will grow to a 2-inch size.

As a guideline 1-2 snails for every 1-2 square feet of water surface will help to keep the pond clear. They are self sufficient, living from year to year. They are also very cold hardy, and during the winter months they become dormant like fish. It is best to introduce Japanese snails once your pond or water tub has established itself (for at least a month), to ensure there will be enough food for them to fed upon. The only predators that I've heard about are raccoons.

We currently sell Japanese Water Snails for: $5.99 each.

Credits:

  • Notes from our supplier (Thank you)
  • Internet web newsletter by Larry Nau: http://www.ggw.org/gvpakc/NewsLetters/February_2001.htm

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