Will Survive in Harsh Winter Climates with Ice Covered Ponds!
These snails are non-invasive and give live birth.
Not egg layers that overwhelm your pond.
The Black Japanese Trapdoor snail (Viviparis malleatus) is the preferred species of water gardeners world-wide. This snail is black in color, body and shell. Trapdoor snails are one of the few larger varieties that can survive the winter in Northern climates. This snail is a great asset in keeping algae under control as they groom your plants, planting pots and water garden walls. They also cruise the pond bottom and consume decaying matter such as leaves and fish food. These are live bearing snails. They only breed a couple of times a year so don't expect them to multiply fast like regular egg laying snails.