Physella acuta (Draparnaud, 1805)

North America, Europe, South Africa, Nile drainage basin, New Zealand… Possibly India, Japan. Original taxon: Physa acuta. Huge number of synonyms. Among many other habitats, acuta can be found in springs, feeding on biofilm. The water in which it lives can be either cold or warm, pure or polluted. – Above: specimens in a pond at Steglitz-Zehlendorf borough, Berlin, Germany. Original picture provided by S. Schulting for iNaturalist – (CC BY-NC).

« Shell light horny yellowish, sometimes slightly transparent, pale shiny, apex pointed, 4-5 not very convex whorls without deep suture, aperture ¾ of shell height, columella and apertural lip in fully grown shells white. » (Animalbase). – Young shell found in the sink of the eastern warm spring of the Clue de la Fou, Saint-Paul-de-Fenouillet, Pyrénées-Orientales. Altitude ≈ 280m. 5mm.