TJ, I see three characteristics that I think indicate RES x BG hybrid. Most noticeable to me is the splotchy, mottled cheeks. Very common to see that on BRES hybrids in our ponds. The overall coloration is also a match, the dark green along the back, and especially the long run of copper on the breast and sides, reaching nearly to the tip of the pectoral. And I think, although the photo doesn't show it very well, that there is a bit of an outline on the opercular.
