I have a 3.5" channel catfish and I'm not quite sure what to feed him. I have tried worms and he likes them, it's just he never eats right away when i put food in there and the worms can inch their way under the gravel and die. When i had a bass, i would leave minnows in there over night since he would only kill them in the dead of night when I am sleeping, but I don't wanna go to petco to get minnows all the time for something I won't get to see eat. Any other suggestions on good foods for him?