Guppy Fry-Gender

[Abbskiie]

Hhow old are guppy fry before you can determine their gender?

 

[Paradise3]

Anywhere from 3 months up usually.

 

[Chad]

Occasionally you get some fast growers but 3-4 months is normal maturation time. I can sometimes tell at 10 weeks or so what the sex is going to be but they've been known to fool me when it's that early so waiting is best.

 

[Paradise3]

Occasionally you get some fast growers but 3-4 months is normal maturation time. I can sometimes tell at 10 weeks or so what the sex is going to be but they've been known to fool me when it's that early so waiting is best.

 
Hence the usually But then you also get ones that don't show till they're nearly a year old like my old homebred boy did XD

 

[Chad]

Nearly a year! That's crazy.

 

[Abbskiie]

Ok thank you. Yeah mine are only a week old and still tiny but some of them are starting to get darker bodies/tales so made me wonder how soon their gender be determined.

 

[Baccus]

Unfortunately with fancy guppies colouration on the fry is no gaurentee for sexing, I often have newborn fry that are born half black and it is only as they mature that the red or blue of their tail will start coming through and this is on both male and female. The best bet for accurately sexing is to let them mature a bit and as soon as you see the male gonopodium starting to narrow and elongate, remove the young males because by this stage they will be wanting to strut their stuff and try breeding with the girls even though the females wont want a bar of them.
I have heard of people claiming they can accurately sex guppy fry at a couple of days of age, but it would take a lot of practice and time of observing the individual fry from hundreds of breedings to come close to acheiving such accuracy. Much easier to wait and see and be pleasantly surprised.

 

[Paradise3]

Unfortunately with fancy guppies colouration on the fry is no gaurentee for sexing, I often have newborn fry that are born half black and it is only as they mature that the red or blue of their tail will start coming through and this is on both male and female. The best bet for accurately sexing is to let them mature a bit and as soon as you see the male gonopodium starting to narrow and elongate, remove the young males because by this stage they will be wanting to strut their stuff and try breeding with the girls even though the females wont want a bar of them.
I have heard of people claiming they can accurately sex guppy fry at a couple of days of age, but it would take a lot of practice and time of observing the individual fry from hundreds of breedings to come close to acheiving such accuracy. Much easier to wait and see and be pleasantly surprised.

 
Agreed, highly.
 

Nearly a year! That's crazy.

 
Yep, he took almost a year to show me he was male XD His brothers were all out the closet by then but not him XD

 

[HAMBONE]

Unfortunately with fancy guppies colouration on the fry is no gaurentee for sexing, I often have newborn fry that are born half black and it is only as they mature that the red or blue of their tail will start coming through and this is on both male and female. The best bet for accurately sexing is to let them mature a bit and as soon as you see the male gonopodium starting to narrow and elongate, remove the young males because by this stage they will be wanting to strut their stuff and try breeding with the girls even though the females wont want a bar of them.
I have heard of people claiming they can accurately sex guppy fry at a couple of days of age, but it would take a lot of practice and time of observing the individual fry from hundreds of breedings to come close to acheiving such accuracy. Much easier to wait and see and be pleasantly surprised.

 
Agreed, highly.
 

Nearly a year! That's crazy.

 
Yep, he took almost a year to show me he was male XD His brothers were all out the closet by then but not him XD

What does the xd mean?? is that a European thang??

 

[Chad]

I think it's an emoticon with a huge smile and squinty eyes...

 

[phantomlink]

XD is supposed to be a really excited smiley, imagine this:

 
My endlers took about 2 months to start showing colour, it was easy to tell which were females pretty fast, they got their dark spot after about a month

 

[Paradise3]

Yes, XD is a huge smiley with squinted eyes

 

[PrairieSunflower]

I've always been able to tell the females by 3-4 weeks old, most males after 2 months but there are the odd ones that can take 4+ months to show they aren't females.