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 ...

Freshwater fish are an ‘aquatic version of the canary in the coalmine’ for Africa’s rivers, lakes and wetlands, a new report ...

D scans of ancient lungfish jaws reveal how early fish evolved to eat differently - offering fresh insight into vertebrate evolution.

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