Finding a pure blue is not the rarity... but numbers in South Florida were studied and there were areas where the hybrids made up nearly 10%... At inshore channels there are next to no queens found... blues dominate almost everywhere in Florida expect the reef tops off shore, where queens do... it is generally believed that blues evolved along the shorelines and queens at offshore reefs... recently in areas like Florida the two populations have mixed back together...
Peter, your old fish, and the one you show with black in the crown... is indeed the hybrid...
Copps
Thanks John, you are always good for an informative post! Looking at my old pics really makes me miss that fish.