Bill: Thanks for the reply. I think I'll keep this one for the table, my curiosity has the better of me.
Scott, when I first pulled the fish from the water, the red margin on the opercular tab was more pronounced. I also wondered about a possible RES connection.

"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.