What is the minimum tank size for an apple snail, would a 2g be too small? I want to get some kind of snail for my 2g betta tank, and apple snails are the most common species sold in my area. I know they get pretty big, I had one a long time ago in a 55g that was about 3-4" when it died, so I don't know if one would fit in my 2g or not.