Re: [GSAS-Member] pH and gender

[haika@drizzle.com]

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 at 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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