I have been considering adding a Raphael Cat (probably striped, although the spotted look really cool they just don't get large enough). I like the idea of having a cat in the tank, but any of the larger ones like shovelnoses seem like way too much to handle. I think the Clown Loaches I currently have will scour the bottom enough as it is anyway. Another bottom feeder may be overkill. Maybe once I get a larger tank...