Re: Sex change in Apisto nijsenni

[Steve <hutchins.33@osu.edu>]

Yes, that was exactly my point.  The pair had spawned repeatedly when they
were younger, and had _many_ batches of viable fry.  That is why I'm
wondering about the change.  I've been dealing with sleeper males since I
started this hobby, and this is definitley not the case this time.

Steve


At 11:27 AM 3/17/98 +0100, you wrote:
>Hi Ken and all,
>
>Ken Laidlaw wrote:
>>
>> > One of the Apisto keepers in my area, Ken Nordby, observed a sex
reversal in
>> > nijsseni.  I believe the male died and one of the the two remaining
females
>> > changed into a male.  I got some of the subsequent offspring.
>>
>> Hi,
>>
>> Is it possible that the 'female' was in fact a sneak male.  
>> I have read and seen to some extent that males will stay 
>> looking like females in the presence in a dominant male.
>>
>> One example being my friend's pair of A. sp tucurui, the 
>> smaller fish looked like a female for a few months but when 
>> the large male died the smaller fish suddenly increased in 
>> size and it's fins lenghtened.
>>
>> I'd agree that with the large sexual dimorphism/chromatism 
>> in A.nijsseni it is less likely for a male to look like a 
>> female.
>>
>> Ken.
>>
>>
>this was my first idea, too. But didn't anybody say he/she spawned? When
it was 
>a sneak male he couldn't spawn?! Or could he/she?
>
>best regards
>Wilfred
>
>
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>     Wilfred Teiser - Germany
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