Scientists, fishermen caught popular aquarium fish in Xingu river and discovered endangered new species: Yudjá armored catfish, study said.

For each of these 60 species, the next severe tropical cyclone may be their last. A better understanding of the distribution and status of these species is only the beginning.

Scientists caught a popular aquarium fish in Xingu river and discovered a new species, already critically endangered, a study said. Photo from Sousa, Sousa, Oliveira, Sabaj, Zuanon and Rapp Py ...

Some catfish released by “aquarium fish traders” a few years ago have grown into a thriving population, showing “their adaptability.” The new species was mainly identified by its color ...

The swordtail is a beginner-friendly tropical fish species. This hardy fish comes in various vibrant colors and can be kept in a freshwater tank as small as 10 gallons.

Photos show the color variation of the new species. Wild-caught fish were usually “light brownish orange,” while aquarium-bred fish were a paler “greyish yellow.” ...

Aquarium fish and other non-native species being dumped in Southern Nevada waterways has done major damage. In the Las Vegas Wash, they’ve had some surprising finds including an alligator.

Growing up to 7 feet long and weighing around 20 pounds, lancetfish are among the largest known deep-sea fish. They’re also notoriously cannibalistic and known to feed on more than 90 species of ...

In landlocked Arizona, where the Colorado River crisis has put water use under a microscope, a new inland desert fish farm is growing barramundi, a tropical species native to Australia. (AP Video: ...

Tennessee Aquarium rescues endangered fish species from disappearing stream Laurel Dace have needed protection since the early 2000s, according to the U.S. Fish and Wildlife Service.

Fish like the pompano and the cobia used to make well-known “runs” or migrations through the northern Gulf, giving fishermen an opportunity to target the prized species.

The Lufubu River fish turned out to be subtly but consistently distinct from other known species. Researchers realized they’d discovered a new species: Telmatochromis salzburgeri, or Salzburg ...