The American Fisheries Society has given Ronald Hedrick, UC Davis professor of medicine and epidemiology at the UC Davis School of Veterinary Medicine, the S.F. Snieszko Distinguished Service Award. Hedrick's work as a fish pathologist has led to a better understanding of the ways that viruses, parasites and diseases affect wild fish populations, commercially farmed species and ornamental fish such as koi. As chief of the school's Fish Health Service, Hedrick oversees advanced veterinary diagnostic training, research projects and veterinary care of fish from around the state.