ScienceDaily Magazine -- Sex Genes Of Fish Disrupted By Common Household Products

Apparently, some chemicals found in many household products can wreak havoc with fish, producing areas where all the fish born are male, or all are female, or they're kind of half and half. As you'd expect, this tends to keep the birthrate low. This is according to a study by the University of Maryland Biotechnology Institute. Maryland! So while DNR is busy trying to keep fish from reproducing, UM is trying to make them reproduce.