The following list of freshwater fish species and subspecies known to occur in the U.S. state of Oregon is primarily taken from "Inland Fishes of Washington" by Richard S. Wydoski and Richard R. Whitney (2003), but some species and subspecies have been added from the Oregon Department of Fish and Wildlife (ODFW) website. Some scientific names have been updated or corrected. Asterisks denote introduced fishes. 108 species and subspecies are listed, 33 of them introduced. The list includes several anadromous species, and seven normally marine species–starry flounder, staghorn sculpin, saddleback gunnel, Pacific herring, topsmelt, surf smelt, and shiner perch–that are occasionally found in fresh water.