These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

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 ...

The cichlid fish of Africa's Great Lakes have formed new species more rapidly than any other group of vertebrates. A new study shows that the ease with which these fish can develop a biological ...

Why does a Caribbean angelfish sometimes resemble its Indo-Pacific cousin, even though they have never lived in the same ocean? Why do coral reefs harbor such a wide range of stripes, spots and ...

In this eye-opening talk, fish paleobiologist Lauren Sallan explains how one of Earth’s most devastating mass extinctions reshaped life on the planet. Around 359 million years ago, nearly 96% of fish ...

A fish thought to be evolution’s time capsule just surprised scientists. A detailed dissection of the coelacanth — a 400-million-year-old species often called a “living fossil” — revealed that key ...

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.

Scientists discovered some of the oldest bony fish fossils in China. The fossils explain the early history of animals with backbones.

Two new studies add to the evidence that human activity, from fishing to urban development, is driving the evolution of wild animals. By Emily Anthes Call it the case of the incredible shrinking cod.