Here's how to produce Adult EBJDs starting with eggs (Theoreticaly, unless you are already breeding them). For each step you can skip, you save about 12-14+ months, so the whole process takes about 3-1/2 years.
JD = Regular Jack Dempsey
BGJD = Blue Genotype (Regular Phenotype) Jack Dempsey (Carrying the Blue Gene)
EBJD = Electric Blue Jack Dempsey
Step 1) EBJD X JD = 100% BGJDs
Step 2) BGJD X EBJD = 50% BGJDs and 50% EBJDs
3) note: EBJD X EBJD = 100% fatal (No fry survive, assuming any eggs hatch at all).
Bottom line is that to actually produce EBJDs, you need an EBJD to spawn with a BGJD. This is why most breeders are unwilling to sell BGJDs. If you pair one with a EBJD, you can save years of breeding, feeding and rearing time.