An ampullariid is a member of the Ampullariidae, a family of snails commonly known as the apple snails.

Snails belonging to the family Ampullariidae live in parts of Africa, South America, Central America, the West Indies and the Southern U.S.A..

Bottom Feeders. The term can be used to describe any organism which primarily dwells and feeds at the bottom on any aquatic habitat. However, it's most often used to describe organisms added to their tanks by aquarium enthusiasts in order to keep their tanks clean. In this case, bottom feeders will either consume the food left uneaten by the tank's main residents or the algae which grows within the tank itself. Examples of bottom feeders available commerically for home fish tanks are Caridina Multidentata, a type of algae eating shrimp, and Ampullariidae or Apple Snails, which consume excess food, rotting vegtation, etc.