I agree with Theo. You could either use hybrid bgill since they produce a lot fewer young each year. Or you could use regular bgill but you may have to manually remove young bgill when and if they become overabundant. Manual removal would involve trapping, seining and or fishing. 50 - 75 channel cats (at least 15"-17" long) in a 1/3 acre warm water pond could eat a lot of young (1"-2") bgill each year. Bgill size eaten would gradually increase as the catfish grow. You could easily get catfish reproduction also in the catfish /bgill pond if proper structure and cover were present.
