I just made my 10g a catfish only tank... well, with the exception of three shrimp. Everyone seems to be getting along just fine - 1 albino cory, 2 otos, 6 pygmy cories. The pygmies are really cute - they school very nicely, and roam around at all levels - and love to play in the current from the filter. The albino is starting to play with them a little bit, but he's been a loner for quite some time now - the pygmies are a new addition a week ago. All in all, a fun little tank!