Fish

Human activities have imperiled our waterways — along with almost one-third of freshwater fish and many other aquatic species.

Lost in much of the coverage of the region’s water woes is the ecological crisis caused by prolonged drought, climate warming and development.

An upcoming project would change the flow of the Mississippi River and its sediment to make up for land the coast is losing due to climate change and sea-level rise.

Addressing environmental threats in Antarctica could help spur global action, an expert says.

A misguided attempt to control mosquito populations has nearly driven this tiny fish to extinction.

A new book looks at the “dark underbelly of our favorite fish” and urges regulators and businesses to better protect wild salmon, coastal ecosystems and consumers.

Fishing subsidies threaten ocean health and food security. The World Trade Organization has a plan to address that, but implementation must come quickly.

Removing dams is one thing, but thousands of levees also restrict rivers in the United States — and they’re not working as intended.

Sharks rarely bite people, so why are so many people afraid of them? It has a lot to do with the media, says shark scientist David Shiffman in a new book.

I became a plaintiff in a lawsuit for the Clear Lake hitch — a fish I’ve never seen. As the species quickly disappears, how much longer will it swim the waters of California?