Sex Of Endler Young

[Juggler75]

Probably a silly question but do any of the water parameters affect the sex of livebearer (specifically endler) offspring?
I read that pH has an effect on the sex of some cichlids but wondered if livebearers were also affected.

 

[Liquid skills]

No they dont its down to genetics water peramiter will have nothin to do with sexing fish nore will temp

The guppies r like us how we become a male or female is the same for them

 

[Juggler75]

Thanks, the male fry must be getting eaten then

 

[OldMan47]

All fry will look like females for at least 6 weeks on a true endler. On a guppy/endler cross, the kind Liquid Skills seems to have seen, they are more like guppies and will take at least 8 weeks to tell what you have.

 

[Juggler75]

No I was just asking as 3 lots of fry have been born so far in friends community tank but only survivors to adult hood were females. Started off with 2 males and 3 females, now has 2 males and 20 females

they are black bar endlers

 

[Mikaila31]

I thought temp was suppose to have an impact on gender....

 

[Juggler75]

which way? Cos I'd love some males off him but so far he seems unable to raise any, any tips I can give him so I can have a free load of males

 

[Liquid skills]

No temp has nothing to do mate just genetics you know 'y' And 'x' chromosomes

The temp thing ony realy works for reptile some anphibs etc

But guppys mollies platies etc are dow to chromosomes like us

The only advice that can be given is to find a new breding pair its very rare but his guppies could only be possible of producing mainly female fry

Or just keep trying bot much can be done im afraid

 

[Juggler75]

Well I picked up a three of his females from him including a pregnant one yesterday and just looked in the tank before turning in for the night to see I now have about 10 fry swimming around and the youngest female has suddenly developed black bars. I'll have to give him back I think.

 

[Liquid skills]

Lol

Thats a turn of events ;P

 

[OldMan47]

There is actually some minor evidence that a slight temperature effect can be seen in surviving fry. The ratio of males to females seems to move to slightly more males in a cool tank. The thinking is that at high temperatures fewer males survive the gestation period because, as Liquid Skills said, the individual fry's gender is the result of genetics.