I'll be adding a Clown Pleco as a tankmate for my Betta Zen. Have you looked into those? NOT the 'common' Pleco mind. They get huge.raptors_4 said:I was thinking of otos too but I don't have live plants and probably couldn't keep any because my tank doesn't have a light. So I should just leave it as a Betta only tank, or are their any other small catfish that could live with a Betta?