Scarus coeruleus, the Blue Parrotfish, wears the rarest color in animal kingdom
Blue is the rarest color in the animal world, this pigment being synthesized only by a small number of species.
The Blue Parrotfish is an incredible example, with an extremely powerful coerulean pigment. Better than a pantone sample.
Note: the species is not protected in Florida, is abundant in all the Caribbean and considered Least Concern by the IUCN. Only restriction, you cannot catch it with a speargun.