Spawning Blue Jack Dempseys or EBJDs
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niiiiiiiiiiice good luck. I wanna just get a Jd female for my community tank where my EBJD is and see if that have any interests in each other.
I don't even try to sex them until they're fully mature adults any more...
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
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.
Randy
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
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.
Randy
why do EBJD x EBJD crosses not survive? i thought that the EBJD is just another color morph such as albinos? please correct me,
it sounds like they are a hybrid?
it sounds like they are a hybrid?
A hydrid would likely throw back a % of whatever it was spawned to (I haven't seen anything but JDs from from thousands of fry), or they would end up sterile, EBJDs do not do either.... I created my line of EBJDs from the begining with a regular female JD X EBJD. They are not a hybrid
EBJDs seem to have some genetic weakness, which is particularly expressed when they are younger. As the grow and mature, they seem to pretty much grow out of it. If bred together (Though I haven't done this), the weakness may just be too much for them to overcome. The Chromosome responsible for color just happens to be on the same gene that carries color. It's not that unusual. Some albinos also have inherent weakness...
I believe that this weakness is why they are seldom seen in the wild, or in the hobby. They probably occure, but die early cause they don't compete well against regular JDs. I am able to raise them because of the carefull (Not always) attention I pay to them.
Randy
EBJDs seem to have some genetic weakness, which is particularly expressed when they are younger. As the grow and mature, they seem to pretty much grow out of it. If bred together (Though I haven't done this), the weakness may just be too much for them to overcome. The Chromosome responsible for color just happens to be on the same gene that carries color. It's not that unusual. Some albinos also have inherent weakness...
I believe that this weakness is why they are seldom seen in the wild, or in the hobby. They probably occure, but die early cause they don't compete well against regular JDs. I am able to raise them because of the carefull (Not always) attention I pay to them.
Randy
Do you regulary sell your EBJD's to fish shops? Im sure they love your business. Nice profit aswell.
