The Parallel Evolution Puzzle

Steelhead in the Pacific Northwest show diversity in their run timing, or the timing of when the fish migrate from saltwater to freshwater. Populations of summer-run and Read More…

Landlocked Chinook salmon discovered in Oregon

With the fall migration of Chinook salmon (Oncorhynchus tshawytscha)┬áin full swing along the Pacific coast, students across the region are learning the classic salmon life cycle: fish Read More…

Written in the Scales

Effectively managing fish populations requires knowing how quickly individual fish grow, and how old fish are at key stages of their life cycle. One common technique to Read More…

Half-pounder history

Salmonid research has an extensive history in California: studies on steelhead (Oncorhynchus mykiss) and Chinook salmon (O. tshawyscha) in Northern California rivers date back to the mid-19th Read More…

Reading scales

Ages of individual fish are a critical piece of life history data used by fisheries managers. From a fisheries management perspective it is important to know how Read More…

Rainbow trout or steelhead?

This may seem like a simple question, but there is more than meets the eye. At first glance the fish in the photo above appears to be Read More…