“…The invasive snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) has spread through the continents of Asia (Ali, 1993), Africa (Brackenbury, Appleton, 1993;de Kock, Wolmarans, 2007;Appelton, Miranda, 2015), Australia (Zukowski, Walker, 2009), Europe (Semenchenko et al, 2008;Raković et al, 2016) and South America (Núñez, 2010) during the past few decades. In India, following the reports on the occurrence of P. acuta (Raut et al, 1995), little effort has been made to document the demography, life history and ecology, which are essential indicators to monitor the colonisation pattern in the native ecosystem (Aditya, Raut, 2002a,b,c;Devi et al, 2006Devi et al, , 2008.…”