Re: NANFA-- Sex change in Xiphophorus sp.?

matt ashton (ashtonmj2003_at_yahoo.com)
Thu, 8 Jan 2004 09:40:14 -0800 (PST)

ive seen info on it being a chang3e in hormone levels in the environment. like the population is too one sided. i also had this happen to me twice. i had fry raised in 10 gals and they would almost always be female. after growth to about an inch i would get about 5 of them turn into males. i do believe it is a full, fertile change.

Sajjad Lateef <sajjadlateef_at_yahoo.com> wrote:Hi all,

What is the latest scientific conclusion on the sex change
in freshwater livebearers like Xiphophorus sp.?

Is it true sex change? Is it considered an apparent sex change
with late-developing males? Is it a change in hormone levels
in females causing them to develop male-like characteristics?

References would be great, if you have them.

Thanks
Sajjad

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