I don't know if this goes here or with the inverts, but I have several small tanks of bettas and would like to put snails in there. There are so many kinds of snails and I don't know anything about them. The females tank is heavily planted and the males each have a chunk of anacharis in with him and I am hoping to get some Java Moss soon. Can anyone recommend some snails? I see ramshorn snails, mystery snails, apple snail, etc. What is the difference?