1. Department of Ecology, Evolution and Marine Biology, University of California, Santa Barbara, California 93106 USA
2. Department of Environmental Science, Policy, and Management, University of California, Berkeley, California 94720 USA
3. Department of Integrative Biology, University of California, Berkeley, California 94720 USA
4. Department of Ecology, Evolution, and Behavior, University of Minnesota, Saint Paul, Minnesota 55108 USA
5. Conservation Solutions Afrika, P.O. Box 880, Nanyuki 10400 Kenya
6. Department of Civil and Environmental Engineering, Princeton University, Princeton, New Jersey 08544 USA
7. National Museums of Kenya, Ichthyology Section, P.O. Box 40658-00100, Nairobi, Kenya
8. School of Biological Sciences, University of Nairobi, P.O. Box 30197, Nairobi, Kenya
9. Kenya Wildlife Service, Wetlands Program, P.O. Box 40241-00100, Nairobi, Kenya
10. Department of Biology, San Diego State University, San Diego, California 92182-4614 USA