from my experience, they aren't very good at standing up for themselves, very little aggression . . . so, in your 65G tank they would be at the bottom of the pecking order, easily losing out to your other fish
in other words, I think it would die, either from being harassed or from being out-competed for food . . .
it also sounds like your tank is already heavily stocked, and adding an EBJD - - which could grow to a decent 8" or so if it lives - - was not a good idea . . . unless this is some sort of grow-out tank and you have something larger planned for later?
EBJD's are not sterlie. And listen to everyone above, the EB will be very stressed with that many tank mates. If you were to get him his own tank with some smaller peaceful fish it would be worth it, very beautiful fish.