The wire is not needed - just floating (or submerged in shallow water) pallets at the waters edge. But that won't stop the predation. Cages with fine mesh or a blocking net to grow FH. GShiners will eat FH yoy/juiv. so better keep them separate.
I realize the predation won't stop, but will the pallets create enough of a safety zone, to establish a population that I can dip into on occaion for bait?
I also have a retention pond up stream from the main pond, but fish seem to wash down from up stream ponds (which is where my unplanned largemoth and sunfish came from.
