When the top spotty fish in a tank disappears, the runner-up turns aggressive within minutes, rushing and nipping rivals ...

Fish make hanging motionless in the water column look effortless, and scientists had long assumed hovering was a type of rest ...

Fish make hanging motionless in the water column look effortless, and scientists had long assumed that this meant that it was ...

The river roars in the heat of the summer. The water is clear and cool, and a respite from the high sun. An angler leans back ...

Compiled by The New York Times, the list, which doesn’t contain Oscars and box-office favorites, has raised plenty of eyebrows.

Remove the top male spotty fish and, within minutes, the next-in-line female morphs into the tank s new tyrant charging and nipping rivals while her body quietly begins a weeks-long transition to male ...

In 2015, two members of the Blue Beach Fossil Museum in Nova Scotia found a long, curved fossil jaw, bristling with teeth.

Researchers have discovered a new species of ancient fish with hooked front fangs that made them a fearsome and effective ...

These 2025 high school graduates can look back with pride and forward with confidence, as we salute them in our annual ...

University of Otago—Ōtākou Whakaihu Waka scientists have discovered that it takes mere minutes for a species of sex-changing fish to develop dominant behavior after a change in the pecking order.