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Swords and guppy babies

Aussie_Bristle

Aussie_Bristle

Fish Herder
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Hi all

Hope you’re all well?!

Well after seeing NC’s beautiful babies, I thought I’d take the time to post some of my little ones. I’ve loved watching these little ones grow and develop their beautiful markings.
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Thanks guys.. they are all so sweet. I’m starting to be able to pick the males out a lot earlier in age now too. I have found the little lads are very boisterous and out there compared to the little ladies. So interesting to watch.
The 2 little girls in the 2nd last photo are my twin girls, they are inseparable and swim around with each other.
 
emeraldking said:
It's always fun to see young fish... It never gets boring... :)
Click to expand...

Everyday they change that little bit, it is so exciting to watch. I have a whole heap more babies that I’m waiting to colour and be able to gender. I seem to be getting more males out of the breeding tho so I’m abit worried that they are going to out do my girl ratio very quickly.
 
Aussie_Bristle said:
Everyday they change that little bit, it is so exciting to watch. I have a whole heap more babies that I’m waiting to colour and be able to gender. I seem to be getting more males out of the breeding tho so I’m abit worried that they are going to out do my girl ratio very quickly.
Click to expand...
I remember reading back in the 90s that tank temp when breeding determined the M/F ratio with livebearers. That of course may now be regarded as a load of old tosh. @emeraldking would be the man to know.
 
ClownLurch said:
I remember reading back in the 90s that tank temp when breeding determined the M/F ratio with livebearers. That of course may now be regarded as a load of old tosh. @emeraldking would be the man to know.
Click to expand...

that is a very interesting theory. Would be interesting to find out how accurate it is
 
I probably actually read that in the 70s when I kept guppy’s as a kid. In the 90s I didnt keep livebearers and wouldn’t have been researching them. It wasn’t like now back then where the internet just throws all sort of random knowledge at you.
 
ClownLurch said:
I remember reading back in the 90s that tank temp when breeding determined the M/F ratio with livebearers. That of course may now be regarded as a load of old tosh. @emeraldking would be the man to know.
Click to expand...
Well, regulating the temperature during the whole (so, not half way or near to the end) pregnancy can manipulate the sex outcome of the offspring. It's a trick many serious breeders use. So, it's not an urban story but neither a 100% guarantee that it works. But most of the time it does. It doesn't work with a specific number of livebearers where it's genetic determined to have more males than females each batch. But that doesn't go for most commercial species but more for certain wild species.
It also depends on what kind of livebearer species we're talking about wether a higher temperature will result in more males or females. But in general, if we look at the commercial "Big 4" (guppies, swordtails,mollies, and platies), the higher the temperature, the more males will develop. For females the opposite.
So yes, you can give it a go.
 
emeraldking said:
Well, regulating the temperature during the whole (so, not half way or near to the end) pregnancy can manipulate the sex outcome of the offspring. It's a trick many serious breeders use. So, it's not an urban story but neither a 100% guarantee that it works. But most of the time it does. It doesn't work with a specific number of livebearers where it's genetic determined to have more males than females each batch. But that doesn't go for most commercial species but more for certain wild species.
It also depends on what kind of livebearer species we're talking about wether a higher temperature will result in more males or females. But in general, if we look at the commercial "Big 4" (guppies, swordtails,mollies, and platies), the higher the temperature, the more males will develop. For females the opposite.
So yes, you can give it a go.
Click to expand...
its a privilege to cyber know you sir.
 
Okay that would be my reason for more males then. I did have my temp sitting at 26-27 degrees but turned it down to 24 degree to fight the columnaris disease and have raised the temp to 25 degrees since. Maybe I’ll get more females this time round
 
ClownLurch said:
its a privilege to cyber know you sir.
Click to expand...
Well, thank you. But the pleasure is mine.... Always nice to relate to other aquarists.
Aussie_Bristle said:
Okay that would be my reason for more males then. I did have my temp sitting at 26-27 degrees but turned it down to 24 degree to fight the columnaris disease and have raised the temp to 25 degrees since. Maybe I’ll get more females this time round
Click to expand...
Well, the next time give it a go...
 
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