Zeb Hogan, University of Nevada, Reno (IMAGE)

University of Nevada, Reno

Zeb Hogan, University of Nevada, Reno

Caption

University of Nevada, Reno conservation biologist and researcher Zeb Hogan is studying big fish -- megafish -- like this freshwater stingray believed to weigh between 550 and 770 pounds. The fish was tagged and released back into the river in Thailand.

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Courtesy of University of Nevada, Reno

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