Jakub Vagner goes head-to-head with a prehistoric fish that survives today the white sturgeon. With a skeleton of cartilage and rows of sharp plates called scutes around its body, a white sturgeon is ...

Vâgner ventures into the world's largest rain forest to go head-to-head with the giant piraiba catfish. These megafish can stretch nearly 12 feet long and weigh a scale-busting 440 pounds. Though ...