Um, it isn't anti-depressants that are feminizing fish. That doesn't even make sense. It is synthetic estrogens, ie pee from women taking birth control pills. Also a few other things, bisphenol A, and certain types of natural and synthetic steroids that are byproducts of agricultural run-off and cattle farming.

http://www.sciencedaily.com/releases/2010/07/100729122332.ht...