Yes they will, but in any body of water, it will only support "X" number of pounds of fish per surface acre. Aeration and feeding will allow you to have more pounds of fish per acre. Channels will take a while to get large, but then again, everybody's definition of large is different.
Once catfish get larger than 3#-4# they start targeting fish for their main food source. So, those forage fish add to the fish biomass in the pond.
CC, if caught and released get VERY hard to re-catch. I'm not sure about Blues.
What size fish (and how many) were you expecting to grow in that pond?
