Norm -- good question, but I'm afraid that there might not be much information. There is a moderate amount of information available on black bullheads, you can find a little on browns in the lake states, and there is almost nothing on yellows. You've heard me say before that we can never say never, or never say there is "nothing available." However, I sure haven't run into much. As you know, SD has lots of blacks, and more yellows than I had originally known. No browns to the best of my knowledge.
