Was curious as to a few peoples opinions about a turtle. I am looking to possibly change one of my tank setups to allow for the addition of a turtle. I am looking for one that will stay relatively small and not get big on me. also one that may do a little better with some fish mates than others. I currently have tanks ranging from 10 all the way up to 75, and plan on adding more. What turtles if any might fit this bill?