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.

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” ...

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 ...