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Old 15-08-2008, 06:45 PM   #1
MJM
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Question Guppy change Gender??

Hi all,

I would like to understand why my female guppy turned into a male guppy, more intense colour and it appears to have developed a gonopodium, she also slim down a lot. I'm v sure she is a female as she produces 2 batch of babies for me ever since i got her in June this year. Another of my female guppy seems to be changing too. Although she looks very pregnant, she seems to develop this gonopodium too..

Curious what could have caused this phenomenon? i have many guppies in my 500mmL x 300mmW x 400mmH tank. Now i have 5 adult female guppies, 3 adult male guppies, and about 13-20 offsprings from them.

~MJM~
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Old 15-08-2008, 10:46 PM   #2
nefish
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Could it be a ribbon type?
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Old 16-08-2008, 09:38 AM   #3
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not ribbon. my fish is like ur photo on the left under your nick. snakeskin? then another female is eh... normal type? fins in blue and red while body is like transparent.
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Old 16-08-2008, 09:41 AM   #4
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Food with Hormone/Colour enhancing is usually said to be the caused.
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Old 16-08-2008, 10:45 AM   #5
Lawrence Loh
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can post some pictures to share?.
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Old 16-08-2008, 10:59 AM   #6
MJM
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Quote:
Originally Posted by zealot View Post
Food with Hormone/Colour enhancing is usually said to be the caused.


Hmm, if that is the case. Will they revert back to female?

Have anyone else encounter this before?
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Old 16-08-2008, 11:01 AM   #7
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Quote:
Originally Posted by Lawrence Loh View Post
can post some pictures to share?.
Eh, i also want to post the photos so u can help me evaluate.. But my mobile camera not clear. Will get a decent camera and take the photos again.. probably upload next monday or tuesday.
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Old 16-08-2008, 11:20 AM   #8
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Quote:
Originally Posted by MJM View Post

Hmm, if that is the case. Will they revert back to female?

Have anyone else encounter this before?
They are still female but no more eggs. However I have some females before from a friend which we called it Y-Linked females, such females exhibits characteristics of male fish (i.e. the godopodium and coloration) and able to give birth. These are not hormone but very rare, usually through long period of selective breeding.

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Old 16-08-2008, 12:22 PM   #9
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Quote:
Originally Posted by zealot View Post
They are still female but no more eggs. However I have some females before from a friend which we called it Y-Linked females, such females exhibits characteristics of male fish (i.e. the godopodium and coloration) and able to give birth. These are not hormone but very rare, usually through long period of selective breeding.

Yours still looking like a female with the anal fin like this. mine like really a male godopodium..

eh, will update with photos to this thread next week!
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Old 16-08-2008, 12:41 PM   #10
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happen to my guppy before. it even chase other females but i think its impotent.. anw that was 2 yrs ago
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