I would agree with the others, EBJDs are generally much more timid, and fragile than regular JDs, so the probability of it being destroyed by a managuense is almost a certainty, and could happen over night. The EBJDs need their own tank without anything even remotely aggressive as a tank mate.
Although I don't like mixing fish from continents, if you must have a blue fish in the tank, something akin to Nimbochromis livingstoni would be much more practical (although not assured), even though they are African, they prefer the same hard water as managuense does.
Although I don't like mixing fish from continents, if you must have a blue fish in the tank, something akin to Nimbochromis livingstoni would be much more practical (although not assured), even though they are African, they prefer the same hard water as managuense does.