Japanese Trapdoor Pond Snails

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Minimum Purchase:
10 units
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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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  • 4
    Trapdoor Snails

    Posted by Bob McCarthy on Nov 12th 2020

    Snails are large and were delivered within a few days. All arrived alive with exception of 4 floaters, that's the reason for 4 stars. Excellent service!!

  • 5
    Great Service

    Posted by Susan on Oct 14th 2020

    The snails showed up on time, wrapped in wet newspaper. I followed the instructions to introduce then to my pond. Everyone of them survived are eating away. Thanks

  • 5
    Japanese Trapdoor snails

    Posted by Lee on Sep 15th 2020

    As soon as we put them in our koi pond they went right to work- each day progress is made destroying algae. Wonderful

  • 5

    Posted by Tony Mallory jr. on Jul 2nd 2020

    excellent way to keep pond cleaned naturally. Recommend draining and cleaning pond though if it's very dirty. We had to do so after two weeks of no results; pond has been clear for nearly three weeks now in 90 plus weather and no filters on koi pond, just got water features and aerator.

  • 3

    Posted by Chloe Johnson on Jun 16th 2020

    The size and amount of the snails were great, however the box was torn, smashed and had been tapped up. One side of the package of snails was smashed. (I think 3-4 snails) the rest were fine. I have not seen any evidence the them opening up yet as my pond has many hiding places.

  • 1
    Don’t buy!!

    Posted by Unknown on Jun 16th 2020

    My pond was crystal clear until these were put in. They arrived late, took over a week to wake up, were covered in green and now my pond has not been clear since. Very disappointed I wasted my $. In fact I’ve fished out as many as I could find and tossed them in the ditch.

  • 4

    Posted by Jonathan Chandler on Jun 10th 2020

    They arrived fast to Texas. I was nervous waiting on them to land safely. All look good and 2 are already crushing around

  • 5

    Posted by Heather on Jun 8th 2020

    I was extremely impressed. They were all healthy and loved the fact they had moss like on them. Wish I could submit a photo. I ordered 10 and recieved 11 as a precaution if one didn't make it. All sank to the bottom but 2 . Had no worries , the next day they all down and certainly was moving about the pond. I will be ordering more products from you. Thanks very much for great service. Oh and it was 4 days later from paid to delivery. Awesome!!!

  • 5
    All alive

    Posted by MICHAEL D MURPHY on Jun 8th 2020

    No issues