The one in the pic could be a blue, but from what I have learned from watching WFN for 10-12hrs per day for the last year and a half is that the true blue walleye species was present in a couple of the great lakes and is believed to be extinct. In different parts of the country, usually northern destinations, you can catch what appears to be blue walleye but genetic testing has indicated that these are still infact regular walleye not a separate species as the true blue walleye were(are) and the blue appearance on these "fake" blue walleye comes from chemical reaction between the fish's slime and various natural tannins in the water. But again this is just what I have heard, it would still be cool to catch a walleye like that whether it was real or not.