Spanish biologist Ignacio Paulin became fascinated by the behavior of these fish, in a project that could now disappear due ...

Casting along a drop-off on the St. Croix River, I felt some sharp tugs. I thought this might be rocks or clams. But then the ...

The first four-legged vertebrates did not grow up like tadpoles after all. That idea has shaped the story of life on land for ...

A new study constructs the first 3D single-cell brain atlas of the lamprey, uncovering the 450-million-year-old molecular blueprint of vertebrates.

Even in darkness, many animals retain a sense of orientation because their nervous system sustains a memory of heading ...

Early vertebrates such as myllokunmingids were small and lacked effective defense mechanisms compared to the large predators ...

China has discovered a globally rare coral reef growth structure-type marine blue hole at Huangyan Dao, marking the first ...

A chance discovery in 1938 by a South African museum curator unearthed a 'living fossil' – a coelacanth, a fish thought ...

Until recently, these species were all classified as “rough fish,” or “trash fish.” None of them had limits or protections, ...

Learn about the time period that took place 251 to 199 million years ago. 3 min read The start of the Triassic period (and the Mesozoic era) was a desolate time in Earth's history. Something—a bout of ...

Deep within the dark caves of northeastern Mexico lives a fish that has spent hundreds of thousands of years adapting to a world without light. The blind Mexican cavefish (Astyanax mexicanus) has ...

Scientists tracking blind Mexican cavefish uncover a striking evolutionary reversal where existing brain circuits are rewired via dopamine to flip behavioral responses to light.