Breeding is tough with ebjds. There haven't been any long-term viable fry with ebjd x ebjd. Also tough is male jd with female ebjd since ebjds tend to be less sturdy and somewhat more docile. Male ebjd with female jd seems to work and crossing back the offspring carrying the blue gene with the father yields 50% ebjd fry.
As to community, go very conservative with tankmates, and even then your ebjd may hide a lot (individuals vary). I know my 5.5" ebjd use to hide from my sev and even my rainbow! Firemouth, although they're more bark than bite, may be too aggressive if your ebjd is one of the really docile ones. Sevs should be fine, rainbow, spinossisimus. If yours is more aggressive, then your options open up. Have you gotten any impressions about its level of aggressiveness?