“…subfasciatus Bourguignat -WESTERLUND (1886) Viviparus viviparus (L.) - PETRBOK (1941), DRENSKI (1947), ANGELOV et al (1963), RUSSEV ( , 1979, JAECKEL (1967), NAIDENOV (1968), FRANK et al (1990), ANGELOV (1998ANGELOV ( , 2000a, HUBENOV (2005HUBENOV ( , 2006aHUBENOV ( , 2007a, GEORGIEV (2012c) Viviparus fasciatus (Müller) -DRENSKI (1947) Catchment areas -1, 3 Distribution in Bulgaria -D, PVS, 0-600 General distribution -European Ecology -pelophilous, potamophilous, stagnant waters Conservation -IUCN-LC Note: BOURGUIGNAT (1980) listed a species with unclear taxonomical status -Vivipara amblya Bourguignat, 1962 - (1927), VALKANOV (1936VALKANOV ( , 1957, PETRBOK (1941), DRENSKI (1947), ANGELOV et al (1963), RUSSEV ( , 1968RUSSEV ( , 1979, FRANK et al (1990), ANGELOV (1998ANGELOV ( , 2000a, HUBENOV (2005HUBENOV ( , 2007a ter molluscs as "saltwater species which is able to survive at low salinity (up to 1‰)". The author also mentioned Hydrobia records from some inland streams and springs by PETRBOK (1941), DRENSKI (1947) and RUSSEV (1979); those were a result of misidentification.…”