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A small limpet-like, conical shell with a backwardly-directed curved apex. Very common and widespread in flowing water.
5-8 mm.
In Europe only absent from areas where flowing water is likely to freeze in winter, therefore not in central or northern Scandinavia. Distribution type probably Eurosiberian Southern-temperate (84), but the de-limitation of various southern and eastern forms which may be given independent species status is poorly known.
GBIF distribution map [open in new tab]
Abundant throughout except in polluted streams and rivers.
Wikipedia page for Ancylus fluviatilis
Anderson, R., (2016). Ancylus fluviatilis O. F. Müller 1774. [In] MolluscIreland. http://www.habitas.org.uk/molluscireland/species.asp?ID=8 Accessed on 2024-11-13. |