Fish Kills Still A Mystery

http://www.dnronline.com/news_details.php?AID=16764&CHID=1
5/12/2008

"In March, the U.S. Geological Survey found that almost all of the
smallmouth bass in the river possess both male and female
characteristics, called intersex. The fish, they say, may have
ingested chemicals containing estrogen, including birth control and
other medications."