Scientists curious as male fish show a feminine streak – By Lee Shearer

University of Georgia researchers didn’t find what they expected when they went out to Georgia rivers and lakes looking for transgender bass – male fish that also have female qualities, specifically eggs in their gonads.

Fish biologist and ecotoxicologist Robert Bringolf and graduate student Kristin Kellock suspected they would see the highest levels of the feminized fish in running water near sewage treatment plant outfalls, where chemicals called environmental estrogens pour into rivers.