The Atlantic goliath grouper
http://news.nationalgeographic.com/news/2008/08/080825-new-grouper.html?source=email_inside_20080902&email=insidesnip
August 25, 2008—One fish—the goliath grouper—has suddenly become two.
The Atlantic goliath grouper, found in warm waters of the Americas and western Africa, is a separate species from the goliath grouper that roams tropical reefs of the eastern Pacific Ocean, a new genetic study shows.
The newly identified Pacific goliath grouper can grow more than 6 feet (1.8 meters) long and weighs nearly 1,000 pounds (454 kilograms).