IMO the mount was a female fish painted to resemble more a male rather than female. Female BG gular area is usually a shade of yellow. Especially during spring-summer the male gular area is some shade of rust, orange, red. See the pair of BG in the link, but note the author in the link calls the upper fish of the pair a hybrid which is incorrect. The upper fish in the picture is a female BG and note its small mouth & also the female's fins show no evidence of any colored margins that are very characteristic of HBG. If you really know the features of BG this error is readily apparent. The male in the 2nd picture is the color of a non-breeding color of a male BG. Be leary and double check of what you read in print, even from me.
http://extension.missouri.edu/p/G9473
