The Mekong giant catfish 🐟 is a fascinating fish found in the Mekong River, which flows through six countries in Southeast Asia: China, Myanmar, Laos, Thailand, Cambodia, and Vietnam. This fish is known as one of the largest freshwater fish in the world, reaching lengths of up to 3 meters (10 feet) and weighing over 300 kilograms (660 pounds)! The Mekong giant catfish is a sensitive creature and is often greyish in color. Unfortunately, this extraordinary fish is struggling to survive in the wild due to habitat loss and overfishing.