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

Psychedelic spiders, wild tulips and funky fish: species to watch in 2026 - Conservationists highlight ‘truly extraordinary’ ...

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

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

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

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

The new MiCO map helps scientists, conservationists, and policymakers quickly see global migration patterns for 109 species.

A tiny fish long feared lost has resurfaced in Bolivia, offering a rare conservation success story amid widespread habitat ...

Some fish can recognize their own faces in photos and mirrors, an ability usually attributed to humans and other animals considered particularly brainy, such as chimpanzees, scientists report. Finding ...

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 ...

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 ...

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