Thoughts may be changing about how much other fish HSB eat. Of course, we've all caught them on live minnow/shiners, and we've seen them balling up bait, but we also know that their mouths do not get as big as LMB and SMB.

I think Augie has said that when he cleans his HSB for eating, he only sees feed and crayfish in them, but not other small fish.

So, your HSB may be more keyed up on feed and less on live fish than the LMB/SMB.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."