I have no proof of this, but I don't think that catfish in general survive stocking in a pond as well as bass and panfish. I stocked about 400 blugill and redear and 25 channel cats last May. As far as I know none of the panfish died, at least I didn't see any dead ones. Half the catfish were dead within a week.
I had another pond owner tell me that the same thing happened when he stocked catfish in his pond.
Larry