Well look no further!
Cuz they don't exist!
Well atleast not that color variation, they say that how the blennys look in the right light when mating supposedly, although my tail spot does have some beautiful color there nowhere near as bright and blue as that photo ( I know as I saw the same photo on live aquaria) I drove 1 hour to buy mine from another reefer as I couldn't find any in my area for over 6 months. That being said, to answer your question
I saw about 5 at Rainbow aquarium and pond, 3 days ago, there most likely sold out but you can always call and ask and atleast you know of a shop that carries them!
Best of luck!
One of my favorite fish
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