The freshwater molluscs of Serbia: Annotated checklist with remarks on distribution and protection status Author Marković, Vanja Author Gojšina, Vukašin Author Novaković, Boris Author Božanić, Milenka Author Stojanović, Katarina Author Karan-Žnidaršič, Tamara Author Živić, Ivana text Zootaxa 2021 2021-07-16 5003 1 1 64 journal article 218052 10.11646/zootaxa.5003.1.1 aceedc3f-3f24-490c-8046-7528c30aac10 1175-5326 5120059 8C98CC0B-18AF-418A-A794-AA3CA9CB7409 20. Bithynia tentaculata ( Linnaeus, 1758 ) Findings in Serbia . Bithynia ( Bithynia ) tentaculata : Karaman & Karaman (2007) . Bithynia tentaculata : Hesse (1929) ; Tomić (1959) ; Matoničkin et al. (1975) ; Frank et al. (1990) ; Jovanović (1990) ; Arambašić (1994) ; Karaman (2001); Jakovčev-Todorović et al. (2005) ; Jović et al. (2006) ; Paunović et al . (2007a , 2008, 2012 a ); Marković et al . (2012 , 2015); Martinović-Vitanović et al. (2013) ; Novaković (2013, pers. comm. 2015); Stojanović (2017) . Common name . Faucet snail, common bithynia, mud bithynia. Morphology . Small-sized snails (conical shell up to 10–11 mm high). Yellowish shell has 5 whorls with deep suture. Operculum and aperture are acute-ovate, uumbilicus is closed. For more details see Welter-Schultes (2012: 38 , figure on the top of the page). Distribution and ecology . West Palearctic species common in slow-flowing and standing waters. The snail inhabits both permanent and temporary waters, yet it prefers muddy substrate with dense vegetation, increased water conductivity and plenty of nutrients ( Welter-Schultes 2012 ; Glöer 2019 . In Serbia , the species is present in all major drainages (rivers, canals, ponds/lakes), while in large rivers such as the Danube, Sava, Tisza and Velika Morava Rivers, populations can be quite abundant. Besides slow-flowing lowland rivers the species is found in medium-sized and smaller hilly-mountainous watercourses as well [Zapadna Morava River (Novaković 2013), Vrla, Rača , Crnica and Mlava Rivers ( Stojanović 2017 )]. Welter-Schultes (2012) reports the presence of this species up to 1400 m .a.s.l. ( Switzerland ), while in Serbia it reaches 1000 m .a.s.l. ( Stojanović 2017 ). Other remarks . Sometimes an individual snail lives a year longer than its usual life span of 12–24 months. Long-living individuals can be found in any population, they have an additional whorl, and they are described as Bithynia . tentaculata f. producta Menke 1828. Some authors even consider it as a valid species ( Glöer 2019 ). Introduced and invasive species in North America ( Kipp et al. 2021 ). On the IUCN Red List it has been assessed as LC ( Seddon 2011 c )