can someone differentiate standard jd's from blue gene jd's

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macframalama

Feeder Fish
MFK Member
Mar 20, 2012
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vancouver island
i picked up a dozen jd's yesterday , brought them home and there colouration is way way off to the 2 i had already , the 2 i had are almost completely navy blue/black and these others i grabbed are not at all the same, i know there all jd's but could the darker of the bunch be blue gene ones? or is it because they are used to there tank with the all black background ....

regardless there all cool just trying to grasp why the severe colour difference
 
thanks

i dont know but my original 2 are like DARK DARK in comparison, i mean its the same fish same markings and all that jazz same fins, same body structure , mouth and head i dunno,

i guess we shall see if any do the do

any input on the temp vs breeding
 
The most reliable way is to actually buy blue genes from breeders and of course by breeding an ebjd to a regular jack yourself.
 
i have no interest in the ebjd project i thought mine were just standard jd's until i saw how pale the new guys were, i dont see much reward in the ebjd projects, its like gen after gen after gen for a handful and there sensitive and sterile , seems like a cluster f to me, i could be wrong but if i was gonna invest that kinda time i would make these
http://www.youtube.com/watch?v=TBGj2UtF1QM these are soooooooooo sweet, i mean whats left to say after the vid...
 
macframalama said:
i have no interest in the ebjd project i thought mine were just standard jd's until i saw how pale the new guys were, i dont see much reward in the ebjd projects, its like gen after gen after gen for a handful and there sensitive and sterile , seems like a cluster f to me, i could be wrong but if i was gonna invest that kinda time i would make these
http://www.youtube.com/watch?v=TBGj2UtF1QM these are soooooooooo sweet, i mean whats left to say after the vid...
Click to expand...

If someone has the results you describe here, they are terrible at this. Ebjd are not sterile, you just can't breed ebjd with ebjd because the mutation makes the fry weak and they die off. If you breed a male ebjd with a blue gene jd, you can end up with 60% ebjd fry that will live long healthy lives.

As far as differentiating between regular and blue gene, some people say you can tell by looking at them, I say hog wash. The eb gene is recessive, therefore it does not show through when the dominant gene is present. The only way to know for sure is either look at their siblings or their fry.

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obviouslly i was mis informed about the whole ebjd thing but still, did you see those "red texas" in that you tube clip

oh boy...

and yes the kid that i witnessed with the ebjd project was a goof ,
what do the typical ebjd's go for?
cash wise canadian or american.

the unfortunate thing is that where i live is super small comparatively to some of the states and #1 there simply isnt as much local interest and a definate population issue

just for giggles there is more people in the state of california than in the entirety of canada.. ... seriously google it
 
In terms of genetics:

EBJD x EBJD = 100% EBJD fries.
EBJD x BGJD = EBJD:BGJD 1:1
EBJD x JD = 100% BGJD
BGJD x BGJD = EBJD:BGJD:JD 1:2:1
BGJD x JD = BGJD:JD 1:3
JD x JD = 100% JD

Fries because no progeny of EBJD x EBJD lives past the fry stage. The blue gene prolly has got something to do with the developmental stage of the female that messes up it's abilities to produce eggs properly hence they're weak and produce weak offsprings. Imo.

In terms of phenotype, because the blue coloration is recessive it can't be identified in carriers by just looking at colors. That said, if the blue gene is linked to other phenotypes, which I find to be highly likely here, it could be co-dominant in terms of expression of some other phenotype and who knows if that means that there is a way to identify carriers just by looking at them or not.
 
Dispatch273 said:
What he said....although some people will tell you that BGJD have a purpleish tint to them. Not all of mine have it but some do. It's not a reliable way to tell a BJGD from regular JD though.
Click to expand...

Obviously not all ebjds have the purple sheen, but is everything with a purple sheen an ebjd?
 
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