Ok, got two mollies, two live plants, and 1 decoration at petsmart, now I have about six snails and I don't know where they came from. I went back to get another load of fish the following Saturday. I got two shrimp(Dont know what kind) another decoration, 2 platys(both died) and lastly 2 balloon belly mollies(1 died), and a few nights after I got those fish, I noticed one snail in the tank. A few days went by and it kept coming out more, and more. Soon about a week after there were 4, and now there are 6 snails. Does anyone know how they got in there? And don't say on the plants, because they kept the plants in a different tank, and the snails were in there own tank, not one type of fish was kept with the snails so how did they get in my tank!