Algae Eating Black Japanese Trapdoor Pond Snails

Item: 150162

Plants ship in accordance with your climate zone & are excluded from our free shipping promotion

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A minimum of 20 snails must be ordered if you are not purchasing any aquatic plants.
Snails cannot be shipped to AK, HI, PR, or Canada.

$2.29 EACH WHEN YOU BUY 10+ OR $1.99 EACH FOR 20+
  • Keeps Algae Under Control
  • Non-Invasive Compared To Other Snails
  • Promotes Balanced Ecosystem

Algae Eating Black Japanese Trapdoor Pond Snails are the preferred species of snail for recreational and professional pond and water gardeners world-wide. Japanese Trapdoor Snails are one of the few snail varieties that can over-winter well and survive in harsher northern climates. Japanese Trapdoor Snails are a great asset in helping keep algae under control in your pond and water garden as they groom plants, planting-pots and water garden rocks and walls. Japanese Trapdoor Snails will tend to the ponds bottom, consuming any decaying matter such as leaves, excess fish food, and even fish waste.

Black Japanese Trapdoor algae eating snails are live-bearing; they only breed a couple of times a year and will not take over your pond like other nuisance egg bearing snails can and will. In order for your algae eating snails to have a positive effect on algae growth, a minimum of 10 snails per 50 sq feet will be needed, and farm ponds will need to have at least 200 pond snails to have any positive effect at all.

Please Note: There is a 5 snail minimum when ordering with other pond plants, and a 20 snail minimum without any plant order.

Please review our 14-Day Live Goods Guarantee. Aquatic Plants, Snails & Tadpoles are excluded from free shipping offers and will ship separately from all other items. All Plants, Snails & Tadpoles have a flat rate shipping charge of $9.95 and will be shipped according to Hardiness Zones. Please click here for estimated ship dates. Snails cannot be shipped to AK, HI, PR or Canada.

Tech Specs

Usage Information

Replacement Parts

Here are the replacement parts for Algae Eating Black Japanese Trapdoor Pond Snails.

Black Japanese Trapdoor Pond Snails
Black Japanese Trapdoor Snails
Recommended Number Water Gardens 10 Snails Per 50 Square Feet
Recommended Number Farm Ponds Minimum Of 200
Also Known As Viviparis Malleatus

Mail Order: What To Expect

Snails may appear lifeless or dead from the agitation of shipping and will more than likely be hiding inside. Open the bag of Black Japanese Trapdoor Pond Snails; filling about half of it with pond water, then float or hold the bag for a few minutes and then let the snails slowly out into pond water after they have acclimated to the temperature change. The snails will slowly after time open up and move along. Leave them in a shallow area and let them work their way out into the deeper section of the pond or water garden.


Most Algaecides are toxic to snails and will kill them. Please be sure to read any precautions and instructions on any algaecide before you use it in your pond or water garden.


Black Japanese Trapdoor Pond Snails cannot be shipped to AK, HI, PR, or Canada.

Weeds Treated

The first step towards effectively treating any pond weed is proper identification. Algae Eating Black Japanese Trapdoor Pond Snails is recommended for use against each of the weeds listed below. Click on your desired weed for more information and alternate control options.