killiguy Posted October 29, 2011 Share Posted October 29, 2011 Ive just had my fist batch of EB dempsys and 25% should be electric blue.Im just wondering at what age the normal and EBs can be told apart and what is the earliest feature Link to comment Share on other sites More sharing options...
AUSCichlidBreeder Posted November 8, 2011 Share Posted November 8, 2011 Wow congrats I heard this is a hard hybrid to make. pics plz :D Link to comment Share on other sites More sharing options...
killiguy Posted November 8, 2011 Author Share Posted November 8, 2011 I cant claim any skill with these fish.The only difficulty is to get a reasonable proportion of EB fry.The dempsys that bred for me were normal looking and behaving(ie simple to breed)but carry the gene for EB type.The best coupling is an EB male with a carrier female,this results in 50%EB fry.EB females are unable to produce viable eggs so cant be used.I inherited these fish and actually prefer the normal Dempsy,Id forgotten how nice they are Link to comment Share on other sites More sharing options...
AUSCichlidBreeder Posted November 8, 2011 Share Posted November 8, 2011 lol ^ that made no sense to me... I am still new to this game !what is 50% EB Fry what are the other 50%? EB felmales are unable to produce viable eggs?Best coupling is an EB male with a JD female? Link to comment Share on other sites More sharing options...
rowie Posted November 9, 2011 Share Posted November 9, 2011 50% electric blue jack dempsey. And 50% normal jack dempsey carrying the gene for ebElectric blue females are not fertile or produce dud eggsBest pairing is an electric blue jack dempsey male with a normal jack dempsey female that has the electric blue geneHope that helps clear it up Link to comment Share on other sites More sharing options...
AUSCichlidBreeder Posted November 9, 2011 Share Posted November 9, 2011 a little ^ how do you know which females JD carry the gene? Link to comment Share on other sites More sharing options...
mattrox Posted November 9, 2011 Share Posted November 9, 2011 You cross a female normal JD with a EB make to get 100% carriers. You cross these to get your EBs. Link to comment Share on other sites More sharing options...
mattrox Posted November 9, 2011 Share Posted November 9, 2011 These are called "spilts". Link to comment Share on other sites More sharing options...
intern1 Posted November 9, 2011 Share Posted November 9, 2011 they are awesome display fish Link to comment Share on other sites More sharing options...
killiguy Posted November 9, 2011 Author Share Posted November 9, 2011 Yep to all thatThe electric gene is a simple Mendelian recessive gene.The only complication is you cant cross 2 EB fish because the females dont produce normal eggs.Carriers of the gene are identical to their normal siblings so if you didnt know the breeding history you would have no ideaThe fry are free swimming and all look identical at this stageIII keep you posted and take some photos along the wayDad id below for those who havent seen it Link to comment Share on other sites More sharing options...
AUSCichlidBreeder Posted November 10, 2011 Share Posted November 10, 2011 Rare fish I take it ? How much you looking at? Link to comment Share on other sites More sharing options...
joller Posted November 10, 2011 Share Posted November 10, 2011 anyone seen gold jd's in aus? Link to comment Share on other sites More sharing options...
intern1 Posted November 10, 2011 Share Posted November 10, 2011 http://animal-world.com/encyclo/fresh/cichlid/ElectricBlueJackDempsey.phpThey are not always hybrids read aboveJohn Link to comment Share on other sites More sharing options...
killiguy Posted November 13, 2011 Author Share Posted November 13, 2011 A few pics at the just free swimming stage.Had a die off of maybe 5% which will presumably be EBsAll look the same so far Link to comment Share on other sites More sharing options...
killiguy Posted November 13, 2011 Author Share Posted November 13, 2011 <p> </p><div><p>A few pics at the just free swimming stage.Had a die off of maybe 5% which will presumably be EBs</p><p>All look the same so far</p><p></p><p> </p><p></p></div> Link to comment Share on other sites More sharing options...
dobbin4 Posted November 17, 2011 Share Posted November 17, 2011 about 1/2cm you can tellseen them up Brisbane from a breeder up there a few years agohe was only getting about 25% E blues plenty of info on them on the net if you look Link to comment Share on other sites More sharing options...
E4G13M4N Posted November 18, 2011 Share Posted November 18, 2011 My pair of splits have spawned this week as well, now the fun begins raising them A couple of things i have heard and noticed to a point (wondering if others have as well)Fry that seems to be carrying the EB gene appear to be much darker barred in colour compared to normals. Stand out in the crowd basically.Growth rate is very painfully slow in the blue EB compared to splits and normals and need to be seperated as the others grow faster, otherwise most of them finish up being food for the splits and normals ??? Link to comment Share on other sites More sharing options...
mattrox Posted November 18, 2011 Share Posted November 18, 2011 about 1/2cm you can tellseen them up Brisbane from a breeder up there a few years agohe was only getting about 25% E bluesplenty of info on them on the net if you lookIf you breed two spilts you will get 25% normal, 25% splits and 25% EB.If you manage to get an EB male to spawn with a split you get 50% spilts and 50% EB.So my question is that can you tell a split from a normal by growth rate? I see a potential problem arising because some people will want to try to breed normal JDs, but offspring from the 1st method with be floating around fish tanks without anyone knowing 100% what they are. And then there will be normals bred with splits and then down the track EBs will pop up unexpectedly. Now is this a problem or not? Link to comment Share on other sites More sharing options...
Gav Posted November 18, 2011 Share Posted November 18, 2011 cant see how it will be a problem in any way if there are fish floating around carrying the recessive EB gene. realistically, if you are breeding 2 jds that are splits and you dont realise it, the fry will be left to their own devices. Given the eb fry grow slower, the chances are that they wont make it through, and if they do I dont really think anyone would be complaining too much. Link to comment Share on other sites More sharing options...
E4G13M4N Posted November 18, 2011 Share Posted November 18, 2011 From what i can gather, normals grow faster than anything with EB gene,Fish carrying the EB gene that are not showing the full colouring are generally darker than the normals, this is based on fish fed the same foods, from the same spawn.Although normals and splits fed on a colour enhancer should also show different colouring, and therefore should still be able to tell them apart ?Breeding splits and normals is not a problem as they are not a hybrid in the first place, they should only produce normals and splits ? Link to comment Share on other sites More sharing options...
mattrox Posted November 18, 2011 Share Posted November 18, 2011 When a mutation occurs, it can affect genes around the site of the mutation too. Other genes affected may not change the appearance, just but might change the functioning of metabolism for example. When you get normals out of a split-split cross they will carry some genes not in the wild type genome. They just aren't EB.... So when these go back into general circulation they carry these genes. A true to type breeder may not want these genes in his or her fish. Link to comment Share on other sites More sharing options...
AUSCichlidBreeder Posted November 23, 2011 Share Posted November 23, 2011 *mind explodes* Link to comment Share on other sites More sharing options...
mattrox Posted November 23, 2011 Share Posted November 23, 2011 summary: What we see doesn't tell us everything about the animal. Link to comment Share on other sites More sharing options...
moosedagoose Posted November 26, 2011 Share Posted November 26, 2011 nice mate!!! Link to comment Share on other sites More sharing options...
joller Posted November 27, 2011 Share Posted November 27, 2011 if only the blue gene could be separated from the weak gene Link to comment Share on other sites More sharing options...
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