In the past I've been diligent about culling potential pest snails that came in on plants. I found this one crawling on the walls of my tank today and I hesitated because he's quite round, and I'm wondering if maybe he's a baby mystery snail.
I have two mystery snails, I'm bad at sexing them, but it definitely looked like they mated at one point. I don't see any egg clutches, but I thought I would see if anybody had any input.
Sorry it's hard to get a good photo of a tiny translucent being.