Can we examine the teeth of living fish and other vertebrates in detail, repeatedly over time, without harming them? Previously, small animals often had to be euthanized to obtain precise information, ...

University of Washington scientists have made a remarkable discovery: real teeth growing on the forehead of a deep-sea ratfish. This finding sheds light on the unique adaptations in fish anatomy, ...

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drawing of green, scaly fish against blue background© Apokryltaros/CC-BY-SA These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish ...

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 ...