The Scariest River Monsters in the World The Goliath tigerfish, a giant predator from Africa, can grow over 5 feet long. True False None The arapaima, found in the Amazon, is one of the largest freshwater fish in the world. True False None Piranhas have been known to kill humans regularly in the Amazon. True False None The giant freshwater stingray, found in Southeast Asia, can weigh up to 800 pounds. True False None The electric eel, native to South American rivers, can generate over 600 volts of electricity. True False None Time's up Most Popular Most Popular
