Pretty much what the title says...I had a pest snail that was my tanks first inhabitant, came in on plants and grew up in my tank over the last 4 months. I have RCS, 2 mystery snails and a bristlenose. Yesterday I did notice the snail looking like he was stretching his body, I didn't think anything of it, he's done it before, but today I found his empty shell, totally cleaned out. Tank mates have shown no interest in him from what I saw and all the parameters are in check. Thoughts?