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 L# Livebearers Lane
  L# Is it a girl or boy!?
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SubscribeIs it a girl or boy!?
Stripes
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female usa
I have a guppy that is 3 inches long. It has a big colorful tail, but im not sure if its a girl or a boy... His or her body is a blueish brown shade.



Thank you for reading my thread!
I hope you answer!


Last edited by Adam at 16-Aug-2005 09:54
Post InfoPosted 26-Jan-2006 11:47Profile PM Edit Report 
Shinigami
 
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male usa us-delaware
Ah, luckily you've picked a fish in which the male has an external sexual organ. That makes sexing it quite easier.

In terms of guppies, swordtails, mollies, platies, and a number of other livebearing fish, the males sport what is known as a "gonopodium" while the females do not. The gonopodium is used to internally fertilize the females. To find it, you just look at the anal fin; it is the single fin on the underside of the body (the paired fins are known as ventral or pelvic fins). If it is long and thin, it's a gonopodium and you've got a male. If it is rounded like a normal fin, then you've got a female.

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The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian.
Post InfoPosted 26-Jan-2006 11:47Profile PM Edit Delete Report 
LITTLE_FISH
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male usa
Stripes,

You can also read This Sticky from the Livebearer Lane Forum.

Ingo

EDIT: Guppies get 3 inches long ?

Last edited by LITTLE_FISH at 16-Aug-2005 11:21


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Post InfoPosted 26-Jan-2006 11:47Profile PM Edit Delete Report 
Tetra Fan
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male usa us-northcarolina
Yup, he is right. But there is another way to tell the difference in guppy's. Males will (usually) have much longer cuadal fins (tail fin) than the females. Not all the time though, so then you will have to go back to the ganopodium to determine the sex of the individual like said in the above post. Older guppy's are easy to tell apart...females will be large and males often smaller.
Post InfoPosted 26-Jan-2006 11:47Profile PM Edit Delete Report 
bettachris
 
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male usa
males have a pointed lower fin, where the females will have a fan. also now or days, guppy females are become just as colorful and longer tail, like the males, so dont always base it off of that.
Post InfoPosted 26-Jan-2006 11:47Profile Homepage Yahoo PM Edit Delete Report 
Wfish
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If your guppy is 3 inches long, it must be a female, due to the fact that males only reach about half that length, but females will occasionally grow that big.
Post InfoPosted 26-Jun-2006 17:47Profile PM Edit Delete Report 
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