Okay, so the tank is tall, the bettas don't have any trouble, but I imagine ADF would, so I don't think those are a good idea. I want something my boys won't eat, and snails really creep me out (lol, I could do larger snails that don't reproduce like crazy), the surface/ground area is 12 in by 10 1/2 inches, so I don't think it's enough for Pygmy cories, but I do have a ten gallon with a female that might work. I really like shrimp, but I don't know how to care for them. So... Oh I also don't think that neons or other sensitive fish would work for me, because I don't have every section in the tank filtered (it's divided into 5 spaces, each section is 12 gallons). So I know that sounds demanding... but I'd appreciate suggestions, and if anyone wants to teach me about shrimp, I'd appreciate it.