River Giants at the Tennessee Aquarium

Some of the world's rivers provide a natural habitat for extremely large fish.

These fresh water giants can exceed 500 pounds and can  be hundreds of years old.  The Tennessee Aquarium spent months converting a salt water tank to fresh water to provide a home for their newest exhibit, River Giants.  National Geographic explorer and fresh water giant expert Dr. Zeb Hogan was in Chattanooga for the grand opening of the exhibit and shares information about mega fish in the fresh water rivers of the world.