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Re: Sex change in Apisto nijsenni

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.


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
>> > 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 Teiser - Germany
>software - aquaristic - filters - food
>       phoenix1@t-online.de
> http://home.t-online.de/home/phoenix1