River Limpet - Ancylus fluviatilis

    Description

    Ancylus fluviatilis is a species of very small, freshwater, air-breathing limpet, the shell has a conical, backwardly directed apex.  It is fairly dull brown to black in colour and shows fine growth lines.

    Identification difficulty
    Habitat

    A bottom living species found in unpolluted running water of all kinds where it adheres to the sides of stones in moderate flows  It also lives on stones in the wave zone of lakes.

    When to see it

    All year round.

    Life History

    Sensitive to pollution but is usually excluded from suitable habitat only by chronic pollution as it will normally recolonize lost territory after incidents.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map