What’s going on here!

In 2005 Thai fishermen netted what is thought to be the world's biggest freshwater fish, a 292kg (644 pound) Mekong giant catfish, in the Mekong River, northern Thailand

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World Wildlife Federation (WWF) hopes the catch will highlight the plight of the Mekong giant catfish, which is a critically endangered species. It is Southeast Asia's largest and rarest fish, and is one of a number of giant fish species under investigation in a WWF and National Geographic Society (NGS) joint conservation project.
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A century ago the Mekong giant catfish was found the entire length of the river from Vietnam to southern China. Today, the population is in decline, scientists estimate the number has decreased by about 90 percent in the past 20 years.