The coelacanth is known as a "living fossil" because its anatomy has changed little in the last 65 million years. Despite being one of the most studied fish in history, it continues to reveal new ...

When an Australian scientist uncovered an ancient-looking placoderm skull in the 1960s, he thought he'd cracked the code on an evolutionary mystery. This so-called 'platypus fish,' scientists had ...

Although they look alike, these fish have evolved separately over many millions of years. Over time, evolution has randomly found two solutions to the same problem. @0siken0 via Twitter Herring, like ...