What is your favorite Living type of Prehistoric Fish?

Elasmobranchs (Sharks and Rays. They're a whole category of Fish that has been around for over 400 Million Years.)

Coelacanths (These only live in the Deepest, Darkest, Waters. They are EXACTLY the same as they were 400 Million years ago.)

Gars (These are from the Cretaceous. The have Armor-like Scales that can deflect arrows, and Crocodile-like mouths. They are the Fiercest Freshwater Fish in the World.)

Sturgeons (Dating back to the Jurassic, they are heavily Armored. Some can be over 20 feet long. Others can live for hundreds of years.)

Arapaima AKA Pirarucu (Dates back to the Cretaceous. They are not only the Biggest Freshwater Fish in the World, but they also have Lung-like Swim Bladders, that let them breathe Air.)