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![[News] Amazon Mollies survive without males](http://forums.deeperblue.com/iconimages/general-freediving/news-amazon-mollies-survive-without-males_ltr.gif)
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#1
May 5th, 2008
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BBCnews:Experts believe that an all femalefish species has survived for 70,000 years without reproducing sexually.(Picture credit: Dunja K Lamatsch)Scientists from the University ofEdinburgh think the Amazon Molly may be employing ...
This is an news discussion thread for discussing the following DeeperBlue.net News item: Click here for original DeeperBlue.net News Item... 
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[News] Amazon Mollies survive without males
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#2
May 5th, 2008
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Amazing - the Black Molly, a tropical aquarium fish, also sometimes gets pregnant without a male, probably for the same reason. Also, in mollies, guppies, platies and swordtails, one mating leads to several pregnancies of 10-100 fry each. Despite this, they mate all day long. It is impossible to stop them breeding.
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Lucia
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#3
May 5th, 2008
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Another twist in the sex life of swordtails is that when a female is old and has had several pregnancies, she avoids the strain of further pregnancy by becoming a fully functional male. She is bigger than a 'natural' male, so she (or he?) can fight off the competition easily.
__________________
Lucia
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