Japanese Trapdoor Pond Snails

(99 reviews) Write a Review
Minimum Purchase:
10 units
Bulk Pricing:
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Product Overview

Black Japanese Trapdoor Snails (Viviparis malleatus)

The Black Japanese Trapdoor Snails (Viviparis malleatus) are the preferred snail species for pond owners and water gardeners. Japanese Trapdoor Snails are one of the few varieties that will survive in northern climates. Pond snails are helpful in keeping algae under control in your pond as they groom your plant containers, rocks, liner sides and plants. Trapdoor snails will consume excess fish food, fish waste and decaying leaves from the bottom of the pond. Japanese Trapdoor Snails are live-bearing and only breed twice a year. They will not over reproduce and become a nuisance like egg laying snails. To have a positive effect on algae growth, a minimum of 10 snails per 50 square feet is necessary. Large natural ponds would require at least 200 snails per acre to be effective.

Minimum order of 10


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  • 5
    Wonderful snails

    Posted by Dana on Jul 26th 2021

    This is the second time I get them. They are awesome for a small Lilly container we have. They keep it so clean. Plus the snails are really cute !

  • 5
    Japanese Trapdoor Snails

    Posted by Jason Ostrander on Jul 21st 2021

    2 snails arrived dead, Thank you for sending extra. Very pleased with service.

  • 5

    Posted by Cynthia Spalding on Jul 15th 2021

    They all arrived safely !

  • 5
    Very Happy with our purchase!

    Posted by Grace Arjona-Ramirez on Jul 6th 2021

    Our snails arrived incredibly quickly, they were packaged very carefully and they arrived in great condition. Thank you so very much!

  • 5

    Posted by Andre on Jul 6th 2021

    Great service. Fast shipment. 5 star

  • 5
    Pond Snails

    Posted by Kelly on Jun 26th 2021

    I purchased these in early spring in NY. I had my doubts as they were not "active" as I transitioned them to my pond, and then did not see them at all in the pond. However, my pond is much clearer and I have now not only seen live adult snails, but now have some babies.

  • 5
    Excellent as always!

    Posted by Tina Woodhouse on Jun 21st 2021

    We’ve purchased Japanese trapdoor snails from Lilyblooms the past couple years. All snails survived shipping and they always throw in an extra couple!

  • 3
    Snail mystery

    Posted by Josie on Jun 21st 2021

    My 20 snails arrived in apparently good shape (no I didn't get an extra in case one dies, as some people mentioned). As instructed, I put them in the shallows of my 8' x 11' goldfish pond and waited to see what they would do. The next morning they had all disappeared. A day later one was floating on the surface, dead. But the others apparently survived. So there should be 19 left. I say "should be" because I have only seen any sign of two of them since. My pond water is relatively clear; I can see the bottom, which is rock- and pebble-covered, with some algae on it. I'm assuming the snails are there, but are camouflaged. However, there ARE also 3-4 bullfrogs (definitely unwanted) in the pond which come over from the nearby marsh pond, and which elude being caught. I've wondered whether the one large frog ate some of the snails (they do eat birds, after all; and they'll eat fish when really hungry). This is a mystery. Assuming the snails ARE still there, I also assume they are doing fine.

  • 5
    japanese trapdoor pond snails

    Posted by sharon on Jun 14th 2021

    Once order these arrived relatively quick from ship date. I ordered 40 and received 46 all done well except 1. They were a fantastic price and great size. I kept them in a bowl of water for 2 days prior to going to our property then put the bowl of water in the pond to let them acclimate and they done superbly. Of course cant see them but no floating shells so everything seems fine. Highly recommend these