Male spotted ratfish have true teeth on a forehead appendage used for mating. Across vertebrates, teeth share many defining ...

When saltwater fish long ago evolved to live in fresh water, many of them also evolved a more sophisticated hearing system, ...

A University of Michigan researcher has discovered an early innovation in the way fish eat. A scientist from the University ...

Researchers have analyzed the antibody Immunoglobulin M in rainbow trout to shed some light on why these proteins may have evolved over time. Antibodies -- proteins that are produced by our immune ...