Quick Take New species discoveries in 2025 include over 850 new marine species documented by the Nippon Foundation-Nekton ...

Scientists have uncovered why big predators like sharks spend so much time in the ocean’s twilight zone. The answer lies with ...

The fish was found at 200 to 2,000 meters below the surface. At least 16 types of recently discovered deep-sea fish are among the darkest creatures ever found, according to a study published Thursday.

Fish is part of the holiday feast in many families at Christmas. But which fish can be put on your plate this year without a guilty conscience? The good news: Some classics are "green" again.

University of Victoria (UVic) biologists have discovered that even closely related fish species make unique and distinctive ...

A deep-sea fish species with unusual cheek patterns has been discovered in the South China Sea after it was listed on online seafood markets. The fish has been named Branchiostegus sanae because its ...

A new study offers the first direct evidence that deep-dwelling mesopelagic fish, which account for up to 94% of global fish biomass, excrete carbonate minerals at rates comparable to shallow-water ...

Tuna, opah, and billfishes such as marlins and swordfish are among the 0.1% of fish species that are warm-blooded. Evidence by an international team of researchers led by UC San Diego’s Scripps ...

"It's a whole new way of looking at what's in the ocean." In this undated file photo, a large group of yellowfin tuna is shown in the waters off Vibo Valentia, Calabria, Italy. Giordano Cipriani/Getty ...

An "odd-looking" deep-sea fish recently washed ashore on an Oregon beach to the surprise of a local aquarium. The Seaside Aquarium in Seaside, Oregon, published pictures of the dead fish in an April ...