like said earlier, youll just have to keep an eye on your fish. i had to channel catfish that were together for over a year and grew up from 1in to 13in and they were fine growing up. then one day the larger turned on the albino so i had to move em to a larger tank... just keep an eye on the fish. you could do pretty much any mixture you wanted as long as your smart with it and do your research. check some of the other threads, theyll have good input for ya.
