I'm just wondering why are you so set on a channal cat? They get too large. I don't mean to be rude or anything but as has been previously stated he'll end up eating your other fish. I would take this advice and suggest you get something like a bullhead of some sort if anything at all, if you really want a catfish you can keep with your other fish
I don't think you understand -- I already have the channel cat. I've had him for a few weeks now. He wasn't in my signature because I bought him at a pet store... but I think I'm gonna put him in there now, anyways.
If I get a 95 for my birthday, I'll probably end up putting a bullhead in there with the perch, rock bass, bluegill (?) and pickerel, just so I have a bottom feeder. I really like catfish.
But like I said before, the channel cat can be in the pond, maybe with some koi if we get some.