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Posted by Steve Wolstenholme on October 13, 2007, 2:07 pm
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On Sat, 13 Oct 2007 19:19:54 +0200, Marco Schwarz
>Hi..
>
>Steve Wolstenholme wrote:
>
>@ glassman:
>>> Since it's so quiet here I thought we'd have a serious adult discussion.
>
>May I introduce "The Freshwater Aquarium" (TFA) - a Google group..?
>
>>>I know many of you are familiar with fish that can have a spontaneous sex
>>>change. I've actually seen it with my own eyes with a livebearer. I was
>>>wondering if anyone has heard of it happening with a larger fish like a
>>>cichlid?
>
>Dicrossus filamentosus (Ladiges, 1958)..!
>
>@ Steve:
>> Cichlids don't change sex. Some look as if they have but it's always
>> just a colour change. Reported sex changes from female to male are
>> always because the apparent female was always a male and it became
>> colourful when a more dominant male dies or is removed. There is no
>> way an egg laying female will turn into a male.
>
>Dicrossus filamentosus (Ladiges, 1958)..?
Very nice fish but they don't change sex. A subdominant male will look
like a female but they are still male. When the dominant male is
removed it looks as if a female changes to a male but it's always been
a male in drag.
Steve
--
Stephen Wolstenholme Neural Planner Software Ltd
EasyNN-plus. The easy way to build neural networks.
http://www.easynn.com
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>I know many of you are familiar with fish that can have a spontaneous sex
>change. I've actually seen it with my own eyes with a livebearer. I was
>wondering if anyone has heard of it happening with a larger fish like a
>cichlid? I have 2 beautiful large severums, one green the other white. They
>take turns laying eggs and then eating them after a few days. I've tried to
>find a male for my white female, but I'm 0 for6! I was thinking how
>wonderful it would be if the greenie would decide to turn male.... guess not
>huh?