Interesting about how the GSH may affect the YP population. My recruitment of YP in the 1/4 acre neighborhood pond was virtually non-existent, and I had floating X-mas trees out for YP spawning. I always attributed the lack of YOY perch to the other predators, but if they we're being picked off before that...crazy.
I recall reading on the forum someone saying the GSF fillets were a bit more mushy than BG, but I don't know.