Cipangopaludina malleata should not be confused with Cipangopaludina chinensis.
Cipangopaludina malleata is a species of large, freshwater snail with an operculum and a gill, an aquatic gastropod mollusk in the family Viviparidae, the river snails.[1]
Originally from Japan, C. malleata has been introduced to various areas along the Pacific coast of North America.
The shell is described as thin and "egg-shaped"[2] with very rounded whorls. The spire is short, and the apex may become worn out in older specimens.[2] The name malleatus derives from Latin malleāre (to hammer) and refers to the "hammered-like sculpture" often found on the shell of this species.[2]