The 1st fish pictured appears to have the most GSF genetics. The last fish picture (3rd one) of 'tubguy' doesn't look pure GSF to me. I think there are a few other sunfish genes in it probably bluegill. Also notice that the fish in the 1st picture has more yellow in the pelvic fins, less yellow is in pelvic fins of the 2nd fish and even less yellow in the 3rd fish. To me the less yellow indicates more genetic influence from another sunfish species. Actually the 2nd fish picture to me has some hybrid influence.
Pure green sunfish normally have more of the emerald streaks on the gill cover.
GSF will grow to be wide across the back especially when they get over 7".
