What is the life span of an aquatic snail?
The shell of a snail grows with them. In one tank I had awhile ago the calcium level dropped and the shells of the snails grew deformed because of this. Hermit crabs will use snail shells to live in. Most of the snails that come in with live plants usually live less than a year but have many offspring. The larger snails (mystery, apple) will live for about a year to a year and a half with a water temperature of 80 degrees but three to five years in water that is in the low 70’s. My daughter’s snail (speedy) died just after 2 years.