National Geographic fellow and aquatic ecologist Zeb Hogan helps release a rare monster Mekong catfish found in the Mekong River near Phnom Penh, Cambodia. This critically endangered fish is the biggest Hogan has seen in more than five years.
Click here to read more: http://news.nationalgeographic.com/2015/11/151118-mekong-giant-catfish-cambodia-zeb-hogan/
VIDEO: Stefan Lovgren
PHOTO: University of Nevada, Reno
PRODUCER: Jean-Paul Polo