Gyraulus riparius

Gyraulus riparius is a species of small freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.

Distribution
The distribution of this species is Holarctic:
 * Germany - critically endangered (vom Aussterben bedroht)
 * Netherlands

Habitat
This small snail lives on water plants in freshwater.

Shell description
The shell is nearly planispiral in its coiling.