While I do whatever I want to do with my pond, I guess I can see some of the logic.

If we look at wildlife, for instance. Say you own 1,000 acres of land, and you start raising your own 'wild' deer and turkeys. They don't want you to be able to harvest all that outside of set hunting seasons.

So, why should it be different for fish?

Again, though, I do whatever I feel needs done at my pond.

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."