I have been catching bullheads(yellow and Brown) ever since I can remember putting a nightcrawler on a hook. I was blessed living in north west Iowa on a farm a couple of miles from a lake and close to numerous sand pits and creeks and a river. They bite on anything. They eat anything. The taste of a fried bullhead is the first taste of fish I remember. I truly miss those days because in colorful Colorado bullheads are as rare as a large mouth bass in the Sahara desert. As far as feeding they eat almost all commercial foods, even dog chow. I have been studding the application of a maggot feeder to supplement commercial feed for our 300 acre pond. Maggots eat anything and the fish love them since they are supposed to be 90% protein. A piscatorial road kill café for our little finny buddies.
Blessings and good fishing.