I can't tell if it is 100% EBJD, but truth be told it looks prettier and more well shaped than any EBJD I have ever seen.

that's a really good looking Dempsey.
I'm looking to start an EBJD breeding setup in the next 6 months - a year, I'm just a sucker for punishment like that. I've always wanted a really great EBJD, and I've always been obsessed with breeding (I blame Pokemon as a child) it's just too bad the recessive blue gene is a b*tch to deal with.
From what I read, if you get pass the 3 inch mark then you're good. The pet store that this guy came from sells them for 24 dollars each and they are about an inch. The guy that I bought this fish from fed him only blood worms. It's been super difficult to get him to eat anything else. He will eat some brine shrimp sometimes but he will skip meals and wait for blood worms.
3" is also the safety mark I've heard about - before that they're frail and could basically drop dead any time.
Super surprised they never weaned your fish onto pellets before they're putting them out for sale, 100% blood worm diet is crazy! Good luck getting him switched over. :/
Try soaking pellets in tank water/blood worms
I bought it from a guy on craigslist that bought it from that fish store. I wanted another one so I asked him where he had originally bought it and it was at a popular fish store in town. That guy fed the fish just blood worms, not the fish store. He even gave me a blood worm lunch box with the fish. I've tried all kinds of different pellets/flakes and the fish rejects them all. The fish will go days without eating but when I put in the blood worm, it's gone in seconds.