What was the first fish on land?
The earliest fish potentially capable of walking on land is Tiktaalik roseae, a species of sarcopterygian that lived approximately 375 million years ago, during the late Devonian Period, in what is today the Canadian Arctic.
What did fishes evolve from?
The first ancestors of fish, or animals that were probably closely related to fish, were Pikaia, Haikouichthys and Myllokunmingia. These three genera all appeared around 530 Ma. Pikaia had a primitive notochord, a structure that could have developed into a vertebral column later.
What is the oldest fish discovered?
The oldest known coelacanth fossils are over 410 million years old. Coelacanths were thought to have become extinct in the Late Cretaceous, around 66 million years ago, but were discovered living off the coast of South Africa in 1938.