Monday, September 9, 2019Friday, September 6, 2019

Climate Change and Competition Reduce Freshwater Rearing in Salmon

Research has shown that salmon, and indeed all organisms with complex life cycles that involve migration, are particularly sensitive to the effects of climate change, such as Read More…

Monday, April 15, 2019Sunday, April 14, 2019

Sinking Salmon Populations Hidden by Hatcheries

You might think it would be relatively straightforward to tell whether the size of an animal population is shrinking, stable, or growing – but sometimes things get Read More…

Monday, November 26, 2018Wednesday, November 21, 2018

Clips and Codes: How Many Central Valley Salmon Come from Hatcheries?

Every year, hundreds of thousands of adult Chinook salmon race upstream to their spawning grounds in the tributaries and mainstems of the Sacramento and San Joaquin rivers. Read More…

Monday, October 29, 2018Thursday, October 25, 2018

The Spring-run Salmon Saga of the San Joaquin

We’ve recently reported on the long and fascinating history of Friant Dam, the collapse of San Joaquin River salmon populations, and the groundbreaking lawsuit that resulted in Read More…

Monday, November 20, 2017Friday, November 17, 2017

Steelhead spa: pampering can promote future spawning

Watching salmon during spawning season makes one thing abundantly clear: the reproductive journey from the ocean back to freshwater and subsequent spawning take a heavy toll on Read More…

Monday, October 30, 2017Sunday, October 29, 2017

Bumpy Ride: Challenges of Trapping and Hauling Salmon

While flying fish have evolved a novel way of getting around, salmon have also been on the move in some surprising ways. They can now hitch a Read More…

Monday, September 25, 2017Tuesday, September 19, 2017

Reproduction Self-Destruction: Trojan Males as Invasive Species Control

Releasing specially bred hatchery fish could help native species by prompting invasive fish to breed themselves out of existence in the wild. An innovative project currently underway Read More…

Monday, July 17, 2017Tuesday, July 11, 2017

Hatchery Delta Smelt: Hope for the Species?

The beleaguered delta smelt continues to decline in California, leading some experts to believe it will soon be extinct in the wild. Meanwhile, scientists have successfully cultured Read More…

Friday, June 9, 2017Thursday, June 1, 2017

Flashback Friday: Hatchery History

Our recent Fish Reports on the 2016 and 2017 salmon seasons highlight the major role fish hatcheries play in California's salmon fishery. On today's Flashback Friday, we Read More…

Monday, March 20, 2017Thursday, June 8, 2017

Fish in a Barrel: The Benefits of Terminal Fisheries

California’s hatcheries have released approximately 2 billion Central Valley fall-run Chinook salmon into the state’s waterways since the construction of the first modern fish hatchery in 1942. Read More…