jack dempsey fry

[ohhsweetness]

i have two jack Dempsey's
and they are male and female

the female is about 1.5" and male is 2.5"
they have fry and i was wondering

how do you tell if i have ebjd ones
because they normal jack d. will eat the
ebjd ones i herd something about a
slipt line or something like that ...

can some one give me a heads up ..?

 

[mariojess]

they're still young, if you can post some pics.

 

[ohhsweetness]

ill try and get pics soon then

 

[Toby_H]

Where did you get your Dempseys from? Did you buy them as regular Dempseys or as Blue Gene Dempseys?

Unless you bought them at an exaggerated price as Blue Genes… then there is no reason to think you may have Blue fry…

But that being said… baby Blue Dempseys begin to develop a gold/yellow sheen to their bodies at around 2 weeks old and have smaller bars that are not as dark as their non-Blue sibling’s bars. They start turning blue at around 2 months…

 

[ohhsweetness]

i got a normal female
and a blue gene split one

but the female is half black with blue on her face the male changes back from dark to light but hes always got blue speckles on his face n fins...

 

[silverdragon]

i think it would be too young to tell, but yeh pics woud help..

 

[ohhsweetness]

my camera is really crap ( well it isnt mine) buh i will try d get pics

 

[ohhsweetness]

well she has ate the fry jus b4 so yer that sucks !!!!

but i saved one

 

[silverdragon]

ohh that sucks.. your gonna wanna try and seperate the next lot once they become free swimminng, have you got another tank??

 

[Toby_H]

If it is truly a Standard Female and a Blue Gene Male then they will not yield any Blue offspring... Although a percentage of them will be Blue Genes

Punit Square claims that a Blue Gene x Blue Gene pair will have 25% Blue offspring, although in my limited experience producing Blue Dempseys from such pairs they range from as low as 10% but as high as 40% Blue offspring from BGxBG pairs...


Also, I generally pull my fry the first day they are freeswimming... Although I get faster growth rates leaving them with the parents I have a MUCH larger amount of fish survive when I pull them right away.

I, like many others, have often suggested that it is the weakest offspring that are killed by the parents. More recently I've become convinced this is not true. When I pull a brood early and keep 500+ fish alive... and when I leave them with the parents and only keep the 50 or so they don't eat... I get approximately the same percentage of strong fish in each group (and same percentage of weak fish)... but since it is the same percentage but from a very much larger group, I end up with many more strong fish when I pull my fry earlier...

I also do not believe that growing fry out faster is in any way better... I like to give them time to develop and mature, not just grow...

Better luck next month!!!