I got two mystery snails about three weeks ago, and I wanted to figure out what the sex of them was. The larger one I have is definitely female from what I can tell: the two openings were pretty prominent behind it's head. However I'm not 100% with my other smaller snail. I'm assuming it's male, but I just wanted to make sure. As well, is that pink/red thing in it's shell normal? I haven't seen that in anyone else's pictures of their snails.