ok so i completely missed the post about dont count fins on a fish and the part about the betta puts off way less waste then a catfish. i feel like such a tard, first off how did i miss that post, and second how did i miss that fact. so then i guess my best bet would be some sort of anabantid like dwarf gourami, croaking gourami, betta, or some other anabantid that is only like 2-3 inches long. sorry i missed that part of the post.