Red Breasted Jack Dempsey

[dhull_41]

wow old thread. i think that last pic is the one they are referring to. there was a big thread a while ago about those

yeah i agree, thats where i pulled that pic off of lol

 

[VRWC]

My grandfather has always kept fish, and when he was stationed in Panama (the 1950s I believe), he traveled all over Central America looking for cool fish to keep. He has pictures of his Jack Dempseys he caught in Mexico, I believe, and they all had red like that in them. He died about 5 yrs ago but always made comments about Jack Dempseys hed see people have or for sale in LFS's not being real JDs because they werent red like the ones he caught wild.

The last time this thread came up, I think I recall someone saying that there was a certain place in mexico where the red ones were caught..and how its not there anymore, or its been developed, or ruined...Im not sure.

 

[Sab_Fan]

Electric blues can breed together, but they create regular Jack Dempseys.QUOTE]


from everything I've read - - and I've been on sites devoted to the Electric Blue JD - - the EBJD trait is recessive; that being the case, any breeding of a pair of EBJDs could result in more EBJDs only . . . and is far more likely to result in nothing, since EBJDs pairings are notoriously unsuccessful (though not impossible)


the process I think you're thinking of is where an EBJD male is mated to a JD female; this will produce a batch of "blue-gene" fry

then a female from that pairing is mated back to the original EBJD (a father-daughter pairing) which would then result in a batch of roughly 75% EBJD (from the 100% EBJD father and the 50% EBJD daughter)

complicated stuff . . . anyone else agree/disagree that's how it works?

 

[Sab_Fan]

then a female from that pairing is mated back to the original EBJD (a father-daughter pairing) which would then result in a batch of roughly 75% EBJD (from the 100% EBJD father and the 50% EBJD daughter)

just to correct myself, I think maybe it would be only 50% EBJD, and the other 50% would be more "blue-gene" dempseys (?)

 

[BrandonJ]

If you breed the regular female to EB male you get about 25% EB. If you breed EB to BG you get a higher percentage EB. I currently have a pair...male EB and female regular. Not sure if I will breed them or sell the pair

 

[Camshaft Ramrod]

Talk about bringin' back from the dead! lol

 

[BrandonJ]

also I have never heard of EBJD to EBJD breeding that resulted with any success.

 

[Sab_Fan]

Talk about bringin' back from the dead! lol

whoa! you're right, didn't even notice that . . . explains a lot . . .

 

[robmcd]

Enough about all this EBJD crap. Discuss it in another thread people. Im tuning in to this thread to find out about RED JDs!! Im sure everyone else is as well. Those things look TIGHT, and Im not even a JD fan at all...

 

[stewnew]

from everything I've read - - and I've been on sites devoted to the Electric Blue JD - - the EBJD trait is recessive; that being the case, any breeding of a pair of EBJDs could result in more EBJDs only . . . and is far more likely to result in nothing, since EBJDs pairings are notoriously unsuccessful (though not impossible)


[/QUOTE]
I have also read countless articles on this type of fish, and have sturdy background in molecular biology/genetics, and although this "electric blue" gene is definitely a recessive gene, it seems that a homologous pair of this allele is most often fatal to the fish (which is quite common in examples of other species)... wish would explain the weak fry, and the high numbers of malformed/deformed EBJDs that I see around my lfs (do you all see the same trend when shopping for ebjds?)

More likely than a completely dominant or recessive gene, would be a scenario of codominance, or co recessiveness...... a quick test in a genetics lab could easily put this controversy to rest by comparing the genotype of an ebjd to its regular counterpart... im just not sure my boss would appreciate that use of supplies