EBJD Breeding project..Pics

[ShastaSoda88]

oh, i like EBJD a lot

 

[jaws19]

ok if anyone hasn't answered this yet ill be shocked an EBJD x GJD = 100% normal looking fry, but caring hopefully both genes, someone on all things dempsey is try the same thing. but his fry look like regular jack dempsey and were not even positive if they carry the gene

 

[cichlidmasterpro]

i would suggest putting a pot or cave or something big enoph for them both to go in.

 

[Camphilophus]

ebjd X ebjd = eggs that don't hatch for the guy who asked. You have to breed a ebjd X a regular dempsey that has 50% ebjd genes to get a ebjd.

 

[Modest_Man]

ebjd X ebjd = eggs that don't hatch for the guy who asked. You have to breed a ebjd X a regular dempsey that has 50% ebjd genes to get a ebjd.

Oh, they hatch all right. They just end up dying a couple days later. It has to do with a fatal double recessive gene.

 

[Toby_H]

I've spawned three different pairs of Blue Dempseys (6 different fish, all Blue)... each pair had eggs that hatched...

Like M_M said, they all died within the first few weeks (weeks not days )

Although I personally believe that after a few generations of careful breeding (including outcrossing as opposed to more inbreeding) this will change... but only time will tell for sure...

 

[killerfish]

As others have said the offspring will most likely be normal colored mabye different bt if you breed the fry with each other then that would be interesting

 

[Modest_Man]

I've spawned three different pairs of Blue Dempseys (6 different fish, all Blue)... each pair had eggs that hatched...

Like M_M said, they all died within the first few weeks (weeks not days )

Although I personally believe that after a few generations of careful breeding (including outcrossing as opposed to more inbreeding) this will change... but only time will tell for sure...

I'm not sure that it will change. I'm completely theorizing now...but have you heard of the Overo Lethal White Syndrome found in horses? I personally believe that the EBJD X EBJD spawn is very similar. Sorry for the derailment.

http://www.netpets.com/horses/healthspa/lethal.html

I bolded the interesting bits...

Overo Lethal White Syndrome (OLWS) is a condition that occurs in newborn foals. The condition is genetic, and both parents carry the defective gene. Horses that carry this gene are most commonly overo white patterned horses (frame overos), but there are exceptions. The defective gene has been found in American Paint Horses, American Miniature Horses, Half-Arabians, Thoroughbreds, and cropout Quarter Horses (foals born to registered Quarter Horse parents that have too much white to qualify for registration with the American Quarter Horse Association).

OLWS foals have blue eyes and are completely or almost completely white at birth. These foals initially appear normal except for their unusual coloring. After a varying period of time, troubling signs of colic emerge due to the foal's inability to pass feces. The OLWS foal has an underdeveloped, contracted intestine caused by a failure of the embryonic cells that form nerves in the gastrointestinal system. Oddly enough, these cells also play a role in determining skin color. There is no treatment for OLWS, and surgery to bypass the intestinal damage has never been successful due to the extensive nature of this type of lesion. Veterinarians advise euthanasia for all OLWS foals because death will inevitably occur from colic caused by fatal constipation.

 

[dudey]

Any luck yet?

Updates!!!

 

[Toby_H]

Very interesting stuff M_M. I can’t argue that it is completely possible that this is a lethal cross, but I feel that there hasn’t been nearly enough experimentation on the subject. I’ll admit that each time I’ve had Blue x Blue pairs spawn, they were siblings (unintentionally spawned in a grow out tank). I wonder if we outcrossed Blue Dempseys for a generation or two and then tried to breed unrelated (at least not closely related) Blues back together if we would have ‘better luck’. But until we have some high dollar genetic research done (unlikely) or get a few more years into refined breeding, all we can do is speculate…

As for the Blue/Gold cross… Blue is the result of a mutation in the gene that designs the color of the fish… Gold, or leucistism, is a mutation which turns off the gene that designs the color… So my thought is that when both take place simultaneously, the leucistism will “turn off” the Blue…

Since we have seen no sign of a partially leucistic Dempsey… nor a partially “Electric Blue” Dempsey… I don’t think this will be a possible result either…

The only effect of the cross I see as a real possibility would be that since leucistic Dempseys do have spangles, (females have) blue blotches on the gill plate and blue/red in the fins… These colors could be affected by the Blue gene. Although, since Blue Dempseys don’t really have much for spangles, females do not have blue blotches and the color in their fins is simply a continuation of their body’s pattern (except for the red line on the top of the dorsal fin which is typically less prominent in Blue Dempseys)… I don’t see the Blue Gene doing much in these areas…

I try to avoid speculating in a public conversation… but at least some of us point out what’s speculation and what’s fact…