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Environment Main Global Warming Natural Disasters Habitats FRESHWATER

Photo Gallery: Overfishing

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Fishermen pose with a giant carp caught in the Tonle Sap River in Cambodia. The fish was reeled in, then released, as part of the National Geographic Society's Megafishes Project—a three-year effort by National Geographic grantee Zeb Hogan to document the largest species of freshwater fish. All of Hogan's megafishes are at least 6.5 feet (2 meters) in length or 220 pounds (100 kilograms). Many of the species he studies are threatened or endangered due to overfishing, development, and pollution. Photograph by Andy Eames/AP