I posted a question about what kind of Bottom Feeders I could keep with my Betta, and all I got was snails. I would much rather not get snails since, they produce alot of waste, and I dont want a bunch of baby snails. Anyways, after a little research, I decided I liked the Oto's. I didn't find anything saying they needed to be kept in schools, but I just wanted to be sure before I went and bought one. Also my tank is a 5 gal. Is that enough room for one?