I finally figured out my source of all the RESxGSF hybrids. I figured there must be at least one adult GSF in the pond. Either that or one of the RES had GSF genes and was passing them on. But there seemed like there was just too many of the hybrids. Yet I have never caught a large, full blooded GSF even though I have fished the pond quite a bit lately.
Up to tonight. Tonight I fished around the cover of the pallets I have for FHM spawning substrate. And one right after the other caught the two GSF in pictures two and three. Both were decent size but the first one was a tub. Fat and healthy. Transferred those two over to the main pond and the RES to my sediment pond.
