Thanks Shorty. I've spent an equal amount of time staring at those photos also. I wonder if any of those fish could be positively identified without checking gill rakers? If not, then is there any hope for identifying photos of hybrids in the absence of hands-on examination by an expert?

"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.