The longfin smelt, a finger-sized fish that once filled San Francisco Bay, has suffered such a drastic decline that the federal government has determined the fish are at risk of extinction. The U.S.

LOS ANGELES (AP) — A tiny fish native to Southern California streams will be studied to determine if it qualifies for protection under the federal Endangered Species Act, a conservation group said ...

The House passed a measure Thursday that would take a California fish species, longfin smelt, off the endangered species list. The measure’s sponsor said the aim is to overturn a “misguided decision” ...

LOS ANGELES— In response to a petition by the Center for Biological Diversity, the U.S. Fish and Wildlife Service announced today that the Santa Ana speckled dace, a small minnow native to Southern ...

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 whether ...

Two potential new species of lamprey fish have been discovered in California waters, according to a University of California, Davis, study. The research is part of a special section on native lampreys ...

House Republicans passed a measure Thursday that would repeal the government's decision to place California's longfin smelt, a finger-sized fish, on the endangered species list. House members passed ...