JAPANESE TRAPDOOR ALGAE EATING POND SNAILS
Will Survive in Harsh Winter Climates with Ice Covered Ponds! 
These snails give live birth, and are not egg layers that overwhelm your pond.

 Black trapdoor snails-15pack

(Viviparis malleatus) -The Black Japanese Trapdoor snail is the
preferred species of water gardeners world-wide. This snail is
black in color, body and shell. We ship them when they get close
to the size of a quarter.  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 watergarden walls. They also cruise
the pond bottom and consume decaying matter such as leaves and fish food.
Full grown snails can reach 2"-3" long.
  
 
 Survive in warm ponds:  Yes  Algae eating capacity:  Moderate to High
 Survive in cold ponds:  Yes  Plant eating capacity:  Low
 Breathing:  Gilled  Breeding:  Sexual, live-bearing