I see the scale tipping - look just above and to the left of the gill flap. My opinion is it is a immature male CNBG. With them some of the elements are missing or subdued.
Cody Note: Also, scale tipping is most prominent during spawning season and least apparent during winter. I agree with ewest, the CNBG above is likely a male in early stages of sexual maturity

Last edited by Bill Cody; 12/14/15 05:07 PM.