© Zeb Hogan / WWF
Giant catfish (Pangasianodon gigas)
© WWF / Zeb HOGAN
Giant freshwater stingray or Freshwater whipray (Himantura chaophraya). The disk of this fish measured 202cm and 413cm from the tip of its nose to the end of its tail. Himantura chaophraya may be the largest species of freshwater fish in the world. More species of giant fish occur in the Mekong River than in any other river on earth. Populations of the giant stingray and other large-bodied Mekong fish are in decline.