New Blue Project....

How are they doing? Any spawns? I am getting very interested into breeding EBJD just as of now.

So would the fry be half gold and blue?

Hopefully they breed, that would be amazing. I just bought 10 blue gene jack dempsey fry off of aquabid from an excellent and experienced EBJD breeder and I will grow them out to breed. I am so excited!

I've bred Blue x Gold a couple times...

100% of the offspring will appear normal / standard / wild-type... none blue, none gold...

In theory, they will all be recessive for both Blue and Gold...

Chances are... the Leucism, which causes the 'gold' color by a drastic reduction in pigmentation, will cause the blue coloration to be 'turned off'... But will still hold the mutated gene for Blue…

Having read all I can find on this topic as well as having talked to several biologist / genetics students and one person with the degree and a job in the field… it is exceptionally unlikely a single specimen will be able to be blue and gold at the same time… but nothing in genetics is absolute… (or so they tell me)

I have not bred offspring of bluexgold with offspring of bluexgold... but I have used bluexgold offspring to spawn with Blue Gene to make baby Blues...

My suggestion to anyone and everyone who is breeding any animal which is effected by a mutated color gene... diversify bloodlines! By the nature in which their coloration is passed down they will be victims of inbreeding and excessive inbreeding is bad... 4 minutes on google and you should be able to find a list of common traits of inbreeding depression and will see that Blue Dempseys have almost every one of these common traits.

nc_nutcase;3161489; said:

I've bred Blue x Gold a couple times...

100% of the offspring will appear normal / standard / wild-type... none blue, none gold...

In theory, they will all be recessive for both Blue and Gold...

Chances are... the Leucism, which causes the 'gold' color by a drastic reduction in pigmentation, will cause the blue coloration to be 'turned off'... But will still hold the mutated gene for Blue…

Having read all I can find on this topic as well as having talked to several biologist / genetics students and one person with the degree and a job in the field… it is exceptionally unlikely a single specimen will be able to be blue and gold at the same time… but nothing in genetics is absolute… (or so they tell me)

I have not bred offspring of bluexgold with offspring of bluexgold... but I have used bluexgold offspring to spawn with Blue Gene to make baby Blues...

My suggestion to anyone and everyone who is breeding any animal which is effected by a mutated color gene... diversify bloodlines! By the nature in which their coloration is passed down they will be victims of inbreeding and excessive inbreeding is bad... 4 minutes on google and you should be able to find a list of common traits of inbreeding depression and will see that Blue Dempseys have almost every one of these common traits.

Click to expand...

so essentially, you're saying that if you bred your blue gene recessive trait golds to someone else's blue gene recessive trait golds, without inbreeding, that half blue and half gold offspring will be produced and the genes will stay separated? that just ruins everything. although it makes sense, i still propose somebody test this theory just for that slight chance you'd get combined genes.

I’m not sure I read you right… and ultimately I’m just theorizing… But…

I do believe it is possible for one fish to have the mutation for blue as well as the mutation for gold (Leucism) simultaneously…

But I believe that the gene (allele) which cause the blue will be “overridden” by the gene (allele) that causes gold (Leucism)… since the nature of Leucism is to “turn off” color produced by pigmentation…

beautiful pair of fish

mr.reef24