Re: [GSAS-Member] pH and gender

["A JACOBSON" <amjacobson52@msn.com>]

You gave me 2 females, 1 male, and 3 too small to sex.  Since then I've had 
exactly one additional female, and a lot of bright, absolutely identical, 
males.  They seem happy, & thrive (only one has died in all that time), but it 
is definitely a boy's club in that tank.

Anita
  ----- Original Message ----- 
  From: haika@drizzle.com<mailto:haika@drizzle.com> 
  To: Greater Seattle Aquarium Society member 
chat<mailto:gsas-member@thekrib.com> 
  Sent: Thursday, February 17, 2005 12:30 PM
  Subject: Re: [GSAS-Member] pH and gender


  This is interesting! I have Endler's from Bob and they started dying when
  my pH fell below 7.0 or so. As long as I keep the pH higher than 6.8, I do
  fine and haven't had any more losses since then. I get about 60% males,
  40% females....rough estimate. More males than females, but I do get
  females. I gave a bunch of Endler's from this tank (mostly still unsexable
  fry)to a couple club members...wonder what the sex ratio ended up with
  those?

  Betty Goetz

  > Hello Fran & June
  > I just checked the pH in my endlers tank. It's 6.6. It probably stays a
  > little lower than that most of the time as I don't do water changes to
  > that
  > tank very often. I did one a few days ago, about 1/3,using Seattle water
  > adjusted to neutral. I get about 60% females, 40% males.
  > If you would like some females let me know just before the next meeting
  > and
  > I will bring in any extra that i might have.
  >
  > Bob
  >
  >
  >
  > At 09:59 AM 2/17/2005 -0700, you wrote:
  >
  >
  >>Hi Fran,
  >>
  >>Since no one else has taken a shot at your question, I will.
  >>
  >>First test the pH in your Endler tank. I never kept but a few Endler's so
  >> no
  >>expert but someone memtioned that they don't do well if let pH drop below
  >> 7.
  >>
  >>It has been so long since I had the guppy and platy gender problem that I
  >>can't remember which what I had to shift the pH, just that I did.
  >>
  >>I suggest that you test pH in your Endler tank and if it is at 7ish, you
  >> can
  >>gently raise it. If it is closes to the 8ish, then try the other
  >> direction.
  >>
  >>When you get the answer that Olberding has lost in the ole memeory banks,
  >>you can proudly write an article for the GSAS newsletter. ;->
  >>
  >>Also Bob Holmes keeps them in plenty, I bet he would test his tank and
  >> tell
  >>you the perfect pH.
  >>
  >>Good luck and let us know how it works out.
  >>
  >>June
  >>
  >>
  >>on 2/14/05 8:23 PM, auntie.fran@netzero.net<mailto:auntie.fran@netzero.net> 
at auntie.fran@netzero.net<mailto:auntie.fran@netzero.net>
  >>wrote:
  >>
  >> >
  >> > A short time ago there was a discussion about the impact of pH on
  >> gender of
  >> > Endler's Livebearers.  I remember that June Olberding had had some
  >> experience
  >> > and that adjusting the pH could produce more male/female
  >> offspring.  Well, my
  >> > colony is getting desperate!  As best I can tell in this heavily
  >> planted tank,
  >> > I have only one female left.  Does anyone here recall whether the pH
  >> was to be
  >> > lowered or raised in order to produce more females?
  >> >
  >> > Thanks for your help!
  >> >
  >> >
  >> > Growing old is inevitable; growing up is optional.
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