Because Norm it takes channels at least 6 lbs to be an effective preditor, the bigger they get the more predatious they get. Yes they are cheap to buy as fingrlings, but so are bass, channels do hardly nothing as preditors under 5 lbs! This is where bass come into play, the are good preditors at around a pound or maybe less!!
If you set up a fishery where you had a bunch of channels at around 6 to 15 lbs, and harvested only those that were greater than lets say 10 lbs. Then replaced every large channel with a fingerling, then you might have somthing. But look at what this requires, if you put small channels in with adult preditor fish they will get eatin just as if you had adult bass. So you would have to turn around and raise them in cages until they get around a pound then let them loose with the rest of the population..
Man!! sounds like too much work to me!!
