I need this snail identified.....Sorry about the quality. It looks like a freshwater pond snail shell, it is white with grey spots and bubble like. The snail is about 1/4 inch long and has a siphon nose. They like to sit on my gorgos and the glass. I have never seen them eat and I do believe they came off of wild collected algaes. I have looked everywhere and cannot find what they are...please help. Maybe a margenella or a type of nassaris snail? I havnt seen them eating anything but they are getting bigger and I have seen around 6 total in my tank thanks. I did see one of these guys sitting on one of my neritina snails for like 8 hours then I went to bed and did not see either snail when I got up.