This year's survey shows significant increases in breeding populations of both mallard ducks and other duck species.

A n endangered species has returned to its Northern California river habitat for the first time in almost a century, wildlife ...

But recent monitoring surveys of the species conducted by fisheries biologists from the California Department of Fish and Wildlife have revealed there are just 6,500 white sturgeon between 40 and 60 ...

Since 1948, CDFW biologists and warden-pilots have conducted this survey annually using fixed-wing aircraft. They focus on ...

The largest freshwater fish in North America, which was once abundant in California’s major rivers and San Francisco Bay, has declined in numbers to a point that state officials will consider ...

Wrasse are a vibrantly colorful group of fish that includes 600 species; many of the tailspot’s relatives are common in home aquariums, Victor said. Declaring a new species isn’t an easy process.

(CN) — The U.S. Fish and Wildlife Service on Wednesday proposed listing the Long Valley speckled dace, a rare minnow native to the eastern Sierra Nevada, as an endangered species.. The decision stems ...

Southern California’s rivers and creeks once teemed with large, silvery fish that arrived from the ocean and swam upstream to spawn. But today, these fish are seldom seen.