Also known as Flavicans Catfish, Growing up to nearly 6 feet in length, the dorado catfish is sometimes called the gilded catfish due to its metallic silver and gold skin with no scales. The dorado and the other three closely related species are widely distributed in the Amazon River basin. These bottom dwellers are native to the Amazon rivers and are crowned record holders for longest freshwater fish migration, beating out the salmon and european eels. It takes the Dorado Catfish hatchlings about a month to cover 3,595 miles before they reach their final home.