Good question. Wish I had an answer! Maybe ewest can post some info. As far as personal experience, in 8 years I can count the number of verifiable Fx hybrids I've caught in our ponds on one hand. If managed accordingly, there will be little to no recruitment.

Try this: http://quod.lib.umich.edu/f/fishery/AAG2862.1810.001?rgn=main;view=fulltext

"Forget pounds and ounces, I'm figuring displacement!"

If we accept that: MBG(+)FGSF(=)HBG(F1)
And we surmise that: BG(>)HBG(F1) while GSF(<)HBG(F1)
Would it hold true that: HBG(F1)(+)AM500(x)q.d.(=)1.5lbGRWT?
PB answer: It depends.