Researchers found evidence that the joints evolved as the species became active predators with jaws and mobile skeletons.

Fish don’t exist. In her novel “Why Fish Don’t Exist,” Lulu Miller points out that a true “fish” clade containing an ancestor ...

A new study analyzes the evolutionary history of 11 deep-sea species from environments stretching from the central Indian ...

Scientists from the Leibniz Center for Tropical Marine Research (ZMT) in Bremen, together with colleagues from Central ...

Through this process, the researchers confirmed a century-old hypothesis about deep-sea fish evolution involving two distinct pathways. "Ancient survivors" represent lineages that colonized the ...

Seeing the contents of the fish’s stomachs also allows scientists to understand the behavior of the fish and better piece ...

Deep-sea fish have adapted through two evolutionary pathways: ancient survivors and new immigrants. A key finding challenges the TMAO hypothesis, revealing a genetic mutation in the rtf1 gene that ...

For years, scientists felt like the fish they were watching watched them back. A new study suggests they can recognize a ...

Wrasse fish use hard surfaces as tools to crack open prey. This behavior shows flexible thinking and environmental awareness.

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

The researchers also studied fossils of extinct fishes dating back almost 400 million years and saw evidence that some of the oldest jawed fishes had bones with joint cavities for articulated ...