“…These snails' habitats consist exclusively of freshwater bodies with little water velocity (less than 30 cm/sec), such as rivers, streams, channels and flooded areas, preferably with little depth (Barbosa and Barbosa, 1994;Pieri and Favre, 2008). There are even reports of the existence of these snails in puddles, drains and flooded, vacant land (Barbosa et al, 2001(Barbosa et al, , 2004Silva et al, 2006;Souza et al, 2008). The presence of vertical or floating vegetation contributes food and shelter and provides support for spawning, which is always done on when the snails are submerged (Brazilian Ministry of Health, 2014).…”