when to separate fry?

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Emily1234

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Just wondering if I have to separate the male and female guppy fry? they are 12 and a half weeks old.
Thanks for any advice
Emily
 

Nick G

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HI Emily, once the males develop there gonopodium then they need to be separated unless you want them to breed with each other
 
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Emily1234

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thanks, does it matter if they breed with each other? since they are siblings.
 

Rhan

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I take my male platy fry out as soon as their gonopodium begins to develop; lengthening slightly and just beginning to change shape.

Inbreeding is best avoided, guppies and other live bearers are usually already inbred to a degree, but the more it occurs, the more problems you end up with. Guppies are supposed to be hardy fish, but now so much of the stock is weak due to inbreeding. I know they purposely inbreed every now and again with certain fish e.g. bettas. But allowing your guppies to inbreed has no real benefits.

I consider attempting to avoid inbreeding in my platies as part of my responsibility as a fish keeper
 
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Emily1234

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ok thanks for the advice
 
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