Hi Heather, Welcome to Permies! Sorry it took so long for someone to
answer.
Since I don't have any kind of
aquaculture set up (yet!) all my fish harvesting is done by good ol' rod & reel, usually with a fly-and-bobber set up.
I know that a number of
permaculture systems that have pond-based aquaculture have either a way to drain down the
pond to concentrate the fish in the bottom allowing for netting the fish, or they have a little 'cove' built with a way to close it off from the rest of the
pond. They
feed the fish in the cove area so the fish are comfortable going in there all the time and when in comes time to harvest they just feed the fish and close the gate behind the fish, once again netting them out.
"Instead of Pay It Forward I prefer Plant It Forward" ~Howard Story / "God has cared for these trees, saved them from drought, disease, avalanches, and a thousand tempests and floods. But he cannot save them from fools." ~John Muir
My Project Page