For a small fish found only in the San Francisco Estuary, the Delta smelt has caused much controversy over the years, ranging from lawsuits to executive orders. What is the history of the Delta smelt?

What does a 3-inch-long, nearly extinct fish native to California’s Sacramento-San Joaquin River Delta have to do with fighting California wildfires? Nothing, apart from a need for water. That hasn’t ...

FRESNO, Calif. (KFSN) -- A UC Davis fish biologist was startled by the extremely low number of delta smelt discovered in a recent survey. Over the years we have seen federal pumping restrictions ...

In an apparent poke at California politics, one of President Donald Trump's executive orders on Monday directed federal agencies “to route more water" from across the state instead of trying to ...

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More than three decades after being listed for protection, California’s delta smelt is “functionally extinct.” The Trump administration could hasten its demise. At just 3 inches long, the delta smelt ...

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Tucked inside President Donald Trump’s flurry of executive actions this week: policies attacking three of his least favorite things in the energy and environmental world. Wind power, low-flow toilets ...

For biologists around the world, the invention of small, portable acoustic, radio and satellite tracking tags has revolutionized their understanding of where animals go and how they live. But ...