OK Its been a while since I have been on here...Whats up with everyone...I stocked 300 Blue cats and 300 Channel cats back in summer 2004 I have been ffeeding off and on most of the past summers.

I have mostly fed them Cheap $18.00 Tractor supply catfish food

Several things, The Bluecats don't seem to be growing as big as the channels. As of today the Blues are about 14 to 16 inches long that to me is too small after 5 years. The channels ar upto 21 inches as the biggest ones. Still to me the channels should be bigger too! They should be well over 10lbs now...Maybe they are and not comeing to the feed....
Can anyone throw some ideas or light on this??

Do Cats "Grow Out" of eating the feed? I seem to remember larger ones last year eating the feed..I'm confused...
I am thinking of stocking threadfin shad next year...would this help? I have Larg Mouth bass as well.
Please any ideas would help.