I've had a pond for two years that had HSB and bullheads. I actually think that HSB are a lot better at controlling bullheads than they are controlling crappie or bluegill. This pond was later renovated and I found virtually no young bullies. Just a few big adults. I think young bullhead's tendency to herd in a big ball near the surface makes them look like spiny pellets. The wipers just pound them. I think young bluegill are better at utilizing micro-cover, like rooted vegetation and filamentous algae to hide.
