To get to the bottom of it, they looked at the fish’s anatomy and physiology and discovered something curious in their gills.

A finger-length fish has reignited a long-running debate about self-awareness, cognition and how much we’ve underestimated ...

Many migratory species such as birds, bats, whales, and fish cross national borders to complete their lifecycle and need ...

Antarctic icefish are famous for living without red blood cells, but they are not alone. A species of needle-shaped, ...

New species are being discovered faster than ever before - at a rate of more than 16,000 every year, suggests a new study.

With the 2025 release of the Migratory Connectivity in the Ocean (MiCO) interactive map, scientists, conservationists, and ...

A tiny fossil fish from Alberta is forcing scientists to rethink a story that has sat quietly in textbooks for decades. It is ...

Stefan Lovgren writes on how freshwater fish from the Arctic to Africa are endanged by climate change and the unpredictable ...

Keystone species play an outsized role in the ecosystem, affecting the natural balance in ways that cannot easily be replaced.

Caught between Trump and Musk’s rockets, a Mexican village despairs US launches operation to seize Russia-flagged oil tanker ...

Red Fish Blue Fish, a specialized online fish retailer based in Washington State, has expanded its inventory to include tropical freshwater fish species. The company, which is focused on rare and ...

Since passage of the Endangered Species Act 50 years ago, more than 1,700 plants, mammals, fish, insects and other species in the U.S. have been listed as threatened or endangered with extinction. Yet ...