A trade-off between tooth size and jaw mobility has restricted fish evolution, Nick Peoples at the University of California Davis, US, and colleagues report in the open-access journal PLOS Biology.

A study published in the Nature journal alters how the evolution of fish has been historically understood. Fossilized fish and other sea creatures have often been pivotal in new scientific discoveries ...

When we think of the fish that inhabit the deep blue sea today, it’s easy to forget that they haven’t always been there. The ...

Hidden within fish DNA are powerful genetic twists that may explain one of nature’s biggest mysteries: how new species form so quickly. In Lake Malawi, hundreds of cichlid fish species evolved at ...

Ancient fossils from South China reveal the earliest bony fishes and shed new light on how jaws, teeth, and key vertebrate ...

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Scientists have discovered previously unknown microbial communities living in hundreds of wild fish, revealing new insights ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish to the formidable, pointed teeth of sharks. But fish evolved from toothless ...

Antarctic notothenioids represent a remarkable evolutionary radiation of fishes that have flourished in the extreme cold of the Southern Ocean. Their unique adaptations — including specialised ...

While there is a common belief that the evolution of humans can be traced back to fishlike vertebrate ancestors, pinpointing ...