The trouble with minijacks

Early-maturing Chinook salmon males, called jacks, have featured prominently in our updates over the past few years. We've observed jacks attempting to mate with larger adult females Read More…

The status of steelhead

Every juvenile rainbow trout (Oncorhynchus mykiss) living in California’s Central Valley has in its genetic makeup the ability to out-migrate to the Pacific Ocean and become a Read More…

Hatcheries gone wild

Stocking from fish hatcheries has become standard practice in salmonid fisheries management: we rely on hatcheries to provide a consistent supplement to our native sport fish stocks Read More…

Hatchery Release Trade-off

California’s three main state hatcheries (Nimbus-American River, Feather River, and Mokelumne River hatcheries) were constructed to mitigate for production of anadromous Chinook salmon lost as a result Read More…

Not all Chinook are created equal

People often ask, what's wrong with hatchery fish? Maybe the most obvious answer is that selective pressures that exist in the wild don't exist in hatcheries. As Read More…