Gyraulus albus

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

Gyraulus albus is the type species of the genus Gyraulus.

Distribution
Palearctic:
 * Belgium
 * Czech Republic - least concern (LC)
 * Germany
 * Hungary
 * Netherlands
 * Poland
 * Slovakia
 * Great Britain
 * Ireland

Habitat
This small snail lives in various types of freshwater habitats among weed and on bottom mud. It doesn't require a high level of calcium.

Description
The shell of this species is rather small, reaching a height of 1.3 - 1.8 mm and a width of 4 – 7 mm. This shell has a discoid shape with 4 - 4½ body whorls that expand in the direction of the aperture. This aperture and the whorls are curved and do not have a keel.

The shell of this species is white (sometimes darkened by mud deposits) and has a characteristic spiral sculpture.