Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations size of stockers

I too do not think that HBG is one yr old, unless maybe it was stocked as a 8" fish. I is very probably a carry over from the old pond or someone else stocked it unknown to the owner.
AS verification what are the sizes of the other "bgill" that you are catching from this pond? Are they all this big, if not then it is probably not one of the recently stocked fish.
Never the less it is a dandy fish.

I suspect there is very little if any GSF in the hybrid based on my experiences with sunfish and due to the coloration and markings. Note the quite pointed pectoral fin. If GSF genes were present the fin would likely be more rounded. Crossing a RES and BG would result in a definate pointed pectoral fin since both parents have pointed pectorals.