Researchers developed a way to run tests on fish learning and memory in the animals' natural environments. The results may ...

In a baffling show of generosity, killer whales across the globe are giving fish to humans—and scientists are racing to ...

A remarkable discovery of ancient fish fossils has revealed a chilling and unusual pattern: Tharsis, a now-extinct genus of ray-finned fish, may have met its end in the same tragic way. Analysis of ...

Scientists discover and name a colorful, new species of aquarium crayfish, Cherax pulverulentus, hiding in plain sight for decades.