80 freshwater species have already been declared extinct — 16 of them in 2020 alone. Latest U.S.

Freshwater ecosystems are essential for human survival, providing the majority of people's drinking water. The ecosystems are home to more than 40 percent of the world's fish species.

Nearly 23,000 freshwater species studied are facing a multitude of threats. Nearly a quarter of the world's freshwater species are at risk of extinction, according to new research. A detailed ...

Freshwater habitats – including rivers, lakes, ponds, streams, bogs and wetlands – cover less than 1% of the planet’s surface, but support 10% of its animal species, said Catherine Sayer, a ...

Nearly a quarter of animals living in rivers, lakes, and other freshwater habitats face extinction, according to a new study published Wednesday in Nature.. Researchers found that 24 percent of ...

Eating just one portion of freshwater fish — such as trout or carp — could expose people to potentially toxic chemical compounds, according to a new study.

More than 90% of popular freshwater fish in Southern California are carrying human-infecting parasites, researchers say. This poses a significant danger for those who like to eat freshly caught ...

McGill University explains freshwater fish’s blood and bodily fluids are saltier than the water they swim in. “ishes’ bodies, just like ours, need a certain concentration of salt to function ...

A trough is an elongated area of low pressure that can stretch for hundreds of miles. When observing an upper-level jet diagram, troughs appear as a “dip” or a “U-shape”.

In their native range, steelhead hatch in rivers, migrate to the ocean, and return to freshwater to spawn. Steelhead in Lake Michigan continue to swim up rivers to spawn, but now treat the freshwater ...