tiktaalik roseae

Fossils of ancient fish Tiktaalik roseae from about 375 million years ago show their fins shaped like the sole of the foot to be placed on the bottom of a river or stream.

A carnivorous fish that existed 375 million years ago was discovered in the Arctic waters of Canada.

According to Reuters, scientists have found traces of Tiktaalik roseae fish, also known as

Fish have gills and fins, but they have no neck. This is partly because, having a neck shaking from side to side in the water will make it difficult to swim fast.