Jumping jack – part 1

Chinook salmon (Oncorhynchus tshawytscha) exhibit many interesting life history traits. Some of the traits are well known to many of us in California's Central Valley. For example, Read More…

Salmon boom or…?

News of a good California salmon fishing season is spreading like wildfire, but we are cautiously optimistic. The Pacific Fishery Management Council (PFMC) calculates the Sacramento River Read More…

Joining the digital age…

Rotary screw traps are used extensively to monitor downstream migrating juvenile salmonids (See: The Count is on). Rotary screw traps utilize a rotating cone powered by river Read More…

Against the current

When salmon hatch they have an innate sense of up and down, and they automatically move downward into the spaces between the gravel. This response to gravity Read More…

Redd characteristics

FISHBIO biologists evaluate salmon redds in West Coast rivers to better understand the spawning habitat preferences of salmon. Spawning locations chosen by Chinook can show considerable variability Read More…

Life and death

When talking with the general public, we're continuously surprised at how little people know about Chinook salmon (Oncorhynchus tshawytscha) life history. As the most widespread salmon species Read More…

A year in freshwater

We caught this yearling Chinook salmon (Oncorhynchus tshawytscha) last Friday while angling for rainbow trout/steelhead (O. mykiss) as part of an acoustic tracking study to evaluate O. Read More…

Salmon are not snowbirds

While humans seem to flock to warmer climates (i.e. snowbirds) as they age, it appears that salmon in the ocean do the opposite. In general we know Read More…

Isolation has its advantages

During a recent visit to Iceland we were amazed by the limited number of freshwater fish species present on the island (7 species). There are only five Read More…

Stark contrasts

As fish populations along the West Coast continue to decline and our thirst for water continues to increase, more and more people are becoming aware of the Read More…