Boy fishes are becoming girls :(

''Around the world, increasing numbers of male fish are developing female traits -- growing new sexual organs and sometimes even producing eggs.
...
It isn't the first study to suggest that anti-androgens might be contributing to the feminization of fish. But the new research found that there are far more of these chemicals in our lakes and streams than anyone realized. And anti-androgenic chemicals in the water might affect human health as well.'' [http://dsc.discovery.com/news/2009/03/04/male-female-fish.html]

A tv programme in the danish public channel DR2 discussed the same issues last year... Too bad it was mostly in Danish and I could not find it online :(