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.

Why are there so many of species of coral reef fish? According to a new study, it’s because about 50 million years ago, some fish figured out how to bite food from hard surfaces. Evolution doesn’t ...

Fish stranded on shore often look helpless, all flops and wriggles. But that clumsy scramble may follow a surprisingly ...

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 ocean was once a much quieter place, populated mainly by smaller creatures, ...

The efficient architecture of our joints, which allows our skeletons to be flexible and sturdy, originated among our most ancient jawed fish ancestors, according to a new study. The efficient ...

Freshwater fishes represent one of the most species-rich assemblages of vertebrates, with lineages distributed across rivers, lakes and wetlands on every continent except Antarctica. Molecular ...

Immunostaining depicts collagen-2 (cyan) and nucleus (magenta) at the articulation in the little skate embryo's pelvic joint. Credit: Neelima Sharma, University of ...

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The taxonomy and phylogenetics of marine fish species integrate morphological, meristic and molecular approaches to classify biodiversity and unravel evolutionary relationships. Traditional taxonomy ...