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

Fish rank as the most diverse group of vertebrates in the world. Scientists recognize over 37,000 distinct species, with many more waiting to be discovered. Most fish fall into the ray-finned group of ...

Predatory fish that evolved into the first terrestrial animals on Earth are still revealing insights into the origins of ...

Hovering fish aren’t loafing—they burn twice resting energy to make micro-fin tweaks that counteract a natural tendency to ...

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 ...

If you want to make your serratus anterior muscle look like toned fish gills, there's one exercise you need to be doing: the ...

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 ...