Refocusing on BCR's goals, is there any way to have a smaller side forage pond for fatheads, or possibly some kind of caged-off area in the main pond to house breeding fatheads?

I'm just exploring any possible paths to get to BCR's goals of a YP-harvest pond.

Using a forage pond is somewhat akin to the sim-world nature of using fish feed. It's not natural, but it can get you where you want to go.

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."