The longest rivers in the world stretch over thousands of kilometres. From the Amazon to the Nile, they are crucial to human ...

In a river of South Africa, a patterned creature with a “sickle shaped” mouth swam through the “dark peat-stained” waters.

A global review of research around the impacts of dams has found they are significantly harmful to diadromous species—fish, ...

In a hard-to-reach cave of northeastern India, a “slender” river creature with “fleshy” lips tucked itself under a rock. A ...

Scientists found a “silvery” river creature in ... “distinctive”-looking fish and, after taking a closer look, realized they’d discovered a new species: Cyphocharax ivo, or Ivo ...

He said the agency's decision last year to declare the fish species endangered was "unscientific" and said it's making it harder to deliver water from the Sacramento-San Joaquin River Delta to ...

“The Mad River Fish Hatchery is no longer providing much, if any, conservation benefit to the species nor the intended recreation or sport fishing benefits in the Mad River,” said Robert ...

Alaska's fresh waters 73 million years ago were teeming with the ancient relatives of today's salmon, pike and other northern fish. A new article has named three new species of fish from that time ...

GRAND JUNCTION, Colo. (KJCT) - The Colorado River has new fish swimming in its waters. A group of Palisade High School students, part of the Endangered Fish Hatchery, released razorback sucker ...

which native fish rely on for spawning, cover and food.” While it’s unclear how the non-native crustaceans got into the Little Thompson River, CPW said the spread of aquatic nuisance species ...