The Goliath Grouper, or the more scientific species Epinephelus quinquefasciatus, is a known species that’s been confirmed in the Eastern Pacific Ocean. This fish can grow to lengths of over 6 feet and can weigh as much as a half a ton.
 
Genetic tests found this Goliath grouper isn’t the same species of Goliath Grouper that resides in the Atlantic ocean, scientifically known as the Epinephelus itajara. Although the Atlantic Goliath grouper and its cousin from the Pacific, the Epinephelus quinquefasciatus share a lot of common attributes, they have distinctly different genetic codes.
 
Matthew Craig, lead researcher at the Hawaii Institute of Marine Biology said,"For more than a century, ichthyologists have thought that Pacific and Atlantic goliath grouper were the same species and the argument was settled before the widespread use of genetic techniques."
 
via timesoftheinternet