Can anyone tell me?

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TheRealMacDaddy

TheRealMacDaddy

Feeder Fish
MFK Member
Apr 6, 2009
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In my own little world
I am going to get a pair of EBJDs from a fish dealer I know. they are currently in the 2-2.5 inch range.

Can anyone tell me if it's possible to sex these fish at this age/size?

I would much prefer to get boy/girl from the get go rather than having to look for a trade-off later on.

Also if anyone might have some photos of Juvie EBs of the differing sexes that would help me greatly.

Thanks to all who read this.
 
If you are trying to get a pair to breed then I would read some of the EBJD threads on the site. You will need a EBJD and a EBGJD to get some EBJD fry. From what I have read most of the EBJD are female. Good luck....it's a great looking fish...thinking of getting one soon myself.
 
Kobe;3099235; said:
If you are trying to get a pair to breed then I would read some of the EBJD threads on the site. You will need a EBJD and a EBGJD to get some EBJD fry. From what I have read most of the EBJD are female. Good luck....it's a great looking fish...thinking of getting one soon myself.
Click to expand...
That's not what i heard, you need one MALE ebjd to breed with a normal female jd, then the babies have the ebjd in their blood but will look normal. So if you breed their babies, then you will get EBJD's, thats why they are more rare and expensive.

"The principle reason that Electric Blue Dempseys are not widely available on the market, and that prices remain high for the species ($30-$60), is due to the fact that breeding Jack Dempseys to achieve Blue Dempseys is a tricky proposition. Two blues bred together will not produce a full blue offspring. To achieve full blue offspring, you must first start with a blue male and breed him with a regular color female Jack Dempsey. The offspring that this pair creates will appear as regular Jack Dempseys, but the difference is that they will carry the blue gene. This group of fish must now be grown out to the size where a female can be determined and selected and bred back to the original blue male. The offspring of this pairing will produce an indeterminant number of true blue variant fish. Obviously a project like this is not for the faint of heart and will require enormous growout type of facilities."


Source-http://www.geocities.com/jackarthur46/electric_blue.html
 
There are people who now have viable pairs of EBJD, but they are rare and it's people who bred EBGJD who have hundreds of them to finaly get a pair of EBJD, Buying two small EBJD with the hope of getting a pair is not very feasible, Most likely one or both will not live more than a month and the odds of getting a pair are very remote. Buy a batch of 6-8 (EBGJD)blue gene fish, much better chance of getting a pair that will actually throw EBJD. Ken
 
Thank you all for your comments.

I understand that with bigger numbers that there is a higher chance of securing a pair. I am getting 6 this time out.

I was just hoping I could determine the sex and get a 2m/4f split and then hope for the best. Of course when and if a pair emerges I know I'd have to find good homes for the rest.

Let me get this straight in my mind... a male and female EB will not produce EB offspring? I guess I better do some more research.
But if anyone can still tell me whether or not sexing at this size/age is possible I'd like to hear from you. Thanx again.
 
TheRealMacDaddy;3101033; said:
Thank you all for your comments.

I understand that with bigger numbers that there is a higher chance of securing a pair. I am getting 6 this time out.

I was just hoping I could determine the sex and get a 2m/4f split and then hope for the best. Of course when and if a pair emerges I know I'd have to find good homes for the rest.

Let me get this straight in my mind... a male and female EB will not produce EB offspring? I guess I better do some more research.
But if anyone can still tell me whether or not sexing at this size/age is possible I'd like to hear from you. Thanx again.
Click to expand...
For breeding, Two EBJD's will NOT produce EBJD fry, but instead fry that has EB in their blood, so when they mate then you will get EBJD's.
And you can sex them either through their dorsal fins, or males tend to have a black spot on their back fin.
 
I think there's some confusion here. If two EBs are bred together, 100% of the offspring will be EBs. The problem is the fry produced from an EB X EB pairing don't tend to be viable, and seldom survive to the free-swimming stage. Thanks to the work of some dedicated hobbiest (several here on this forum), the quality of EBJDs is improving, and hopefully, EBJD X EBJD pairings will become practical in the future, but, for now, you really should plan on either getting an EBJD X BGJD (Blue Gene Carrier) pair, or a BGJD X BGJD pair. The first pairing will produce ~50% EBJD offspring, the second pairing will produce ~25% EBJD fry. Good luck.

Mark
 
Markm0723;3101274; said:
I think there's some confusion here. If two EBs are bred together, 100% of the offspring will be EBs. The problem is the fry produced from an EB X EB pairing don't tend to be viable, and seldom survive to the free-swimming stage. Thanks to the work of some dedicated hobbiest (several here on this forum), the quality of EBJDs is improving, and hopefully, EBJD X EBJD pairings will become practical in the future, but, for now, you really should plan on either getting an EBJD X BGJD (Blue Gene Carrier) pair, or a BGJD X BGJD pair. The first pairing will produce ~50% EBJD offspring, the second pairing will produce ~25% EBJD fry. Good luck.

Mark
Click to expand...
This information is correct; some in the previous posts was not. If you're interested in ebjds, you should visit two sites and be prepared to do a LOT of reading:

http://dempsey.6.forumer.com/index.php
http://bluejax.14.forumer.com/index.php
 
Hi
I am also trying to breed EBKDs. Ive done some research and this is what I know.
1. Most EBJDs are male because when they are young they are more suseptible to parasite and disease because they have a weaker immune system. They males appear to resist more than the females therefore more males survive to mature.
2. To breed them you have to have a female that carries the electric blue gene(EBGJD). Usually if you do get a pair of EBJDs to mate the eggs are usually dead or the fry die off. I was fortunate enough to find someone on here who sells them.

Hope i helped you out.
Good Luck
 
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