Just over a month ago I bought what I think is a little Golden Apple Snail, it's grown so fast. Tonight I was looking in a skull we have for hiding, and I noticed a black baby snail, probably about 1 cm. I read Apple Snails lay eggs, and are sexual so they need a male to fertilize them. Well I haven't seen any eggs, and only this one apple snail had ever been in the tank. Does anyone know how or where this little snail came from?