Zeb S. Hogan received his B.S. degree in ecology and evolutionary biology from the University of Arizona in 1996. In addition to his substantial work on Mekong river fish species, Hogan has also been involved with conservation projects on the Colorado River and, more recently, in Mongolia. He is currently a Ph.D. candidate in the Department of Wildlife, Fish and Conservation Biology at the University of California, Davis.Address for Hogan: Department of Wildlife, Fish and Conservation Biology, One Shields Avenue, University of California, Davis, CA 95616.Internet: zshogan@ucdavis.edu