I'm so blue!

A rare find in a Henderson crawfish pond by Terville Vicknair and Shadey Hebert.
Nature photographer Kim Dever Thibodeaux says (on Facebook) “Bullfrogs’ green pigmentation is due to a combination of yellow and blue pigments. On rare occasions, mutations occur and the yellow or blue is absent. In this case, the yellow is missing. This guy belongs in an aquarium.”