The size of each snail that you'll receive is 1-3 cm, they typically grow to about 3.8 - 5 cm. (2") These hardy trapdoor snails make fascinating additions to aquariums. Known for their unique spiral shells and trapdoor feature, these snails burrow into the substrate during the day to feed and rest in safety. At night, they emerge to graze on algae and leftovers from fish feedings. Their efficient cleaning habits help keep the tank clean. Trapdoor snails come in a variety of attractive colors and patterns. They are easy to care for - just provide them plenty of calcium-rich substrate and algae wafers or vegetables. These peaceful snails get along with most fish and invertebrates. Their intriguing behaviors will captivate aquarists of all ages for hours. Breeding is also possible with the right setup. Add interest and nature's clean-up crew to your freshwater tank with these low-maintenance trapdoor snails.