John Lyons is a fish biologist and ichthyologist with over 32 years of experience. He received his Bachelor of Science degree in Biology from Union College, Schenectady, NY, and his Master of Science and Ph.D. degrees in Zoology from the University of Wisconsin-Madison. Currently, he serves as the Curator of Fishes at the University of Wisconsin Zoological Museum and as a Fisheries Research Supervisor for the Wisconsin Department of Natural Resources, both in Madison. As curator, he have conducted conservation-oriented work on freshwater fishes throughout Mexico since 1986. A long-term focus has been the goodeid fishes and their associates in central Mexico. John serves as the Chair of the North American branch of the Goodeid Working Group (NAGWG), and he is an honorary member of the Mexican Ichthyological Society (SIMAC). John has been honored to have a goodeid recently named after him, Xenotoca lyons.