Survival of the small and shy – angling selects against big, bold fish
Removing fish from a population through fishing is known to have many impacts, such as selecting for fish that reproduce at younger ages and smaller sizes – Read More…
reproduction
Flashback Friday: Arrested Development
Pacific lampreys (Lampetra tridentata) are a species with a prolonged infancy. They begin their life cycle in freshwater as blind, worm-like larvae called ammocoetes, and remain in Read More…
Flashback Friday: Three to Tango
In honor of Valentine's Day, today's Flashback Friday is a look at the love lives of the Sierra newt. When love is in the air for Sierra Read More…
Flashback Friday: Before they Hatch
Following the fall-run Chinook salmon spawning season, little salmon eggs are now beginning to develop in the gravel of river beds throughout the Central Valley. Today's Flashback Read More…
San Joaquin Shad
We sometimes get asked whether American shad live in the San Joaquin River basin. The answer is – Yes! Although the American shad (Alosa sappadissma) is native Read More…
Spawn of the Living Dead
As October draws to a close, most of us have spent the past few weeks surrounded by images of Halloween monsters. Whether flipping past TV horror movies Read More…
All Boys Club
Can skewing sex ratios of invasive fish save salmonids? Last year we wrote a Fish Report about a predator-control method being developed by Idaho’s Department of Fish Read More…
Large Salmon Getting Smaller, Old Salmon Getting Younger
Those who fished for salmon decades ago often lament the bygone “good old days” of abundant, large fish. As it turns out, there is some truth to Read More…
Left High and Dry: Hydropeaking Effects on Aquatic Insects in Regulated Rivers
Dramatic rising and falling of water levels is a common experience for sea stars, mussels, and other marine invertebrates adapted to life on the rocky coast – Read More…
Before They Hatch
When salmon build nests (redds) on top of each other, called superimposition, this can affect both individual salmon and salmon populations as a whole, as we described Read More…