A Guide to Freshwater Fishes of Oregon is the first authoritative guide to the native and non-native freshwater fishes found in Oregon. It provides identification aids and images for most of the 137 known species and subspecies. Larval and juvenile stages and hybrids are also illustrated for some groups.
Many groups of Oregon fishes are difficult to identify because of their size, diversity of forms, or lack of comprehensive study. In addition, ongoing debate remains about the number of species or subspecies in Oregon. This guide makes use of established naming conventions while...