Keeled Ramshorn - Planorbis carinatus

The width of shell of this species is 9 to 15 mm. The shell has a noticeable keel at the center of the periphery of the body whorl.

Freshwater ponds, lakes and slow moving streams with muddy bottoms.

All year round.

Widespread in Britain though less common in the far north and the west.

Frequent in Leicestershire and Rutland.