Planorbis (ram’s horn snails)
Planorbis: Classification, Ecology, Identification, and Importance Planorbis is a genus of air-breathing freshwater snails in the family Planorbidae, commonly called ram’s horn snails for their flat, disk-like shells that coil in a single plane. Species in this genus are hallmark residents of ponds, ditches, canals, lake margins, and quiet river backwaters, where they graze biofilms […]