Ian Harrison obtained his Ph.D. in systematic ichthyology at the University of Bristol, UK. He has conducted research on marine and freshwater fishes from several parts of the world, including fieldwork in Europe, Central and South America, West and Western Central Africa, the Philippines, and the Central Pacific. He was based at the American Museum of Natural History from 1996 to 2008, conducting research on systematic ichthyology and freshwater conservation biology, before starting work with Conservation International (CI) and the Global Species Programme of the International Union for the Conservation of Nature (IUCN). He is currently the Freshwater Specialist for CI’s Moore Center for Science, where he is helping develop CI’s Freshwater Science Strategy as well as CI’s broader, institutional-wide Freshwater Initiative. He has served as the Technical Officer for the Freshwater Fish Specialist Group of International Union for the Conservation of Nature’s (IUCN) Species Survival Commission (SSC), is part of the Steering Committee for SSC, and co-chair of the IUCN-SSC Freshwater Conservation Subcommittee. He is an Adjunct Professor for the School of Earth and Sustainability, Northern Arizona University. He is currently based in Flagstaff, Arizona.