10, arapaima: Arapaima live in the Amazon River Basin, they have sharp and strong teeth, adult fish body length of up to 2-6 meters, weight up to 100 kg, huge body size. Inhabiting the natural lagoon and the slow-flowing stretches of the Amazon river, it is the largest freshwater fish on the South American continent.
9, New Guinea perch: New Guinea perch is a kind of perch with sharp teeth, they can reach up to 2 meters in length, and have great strength in the water, making them known as the overlord of the river.
8. Nile perch: Nile perch are ferocious predators, feeding on fish (including their own kind), crustaceans and insects; juveniles feed on zooplankton.
7. Zheluo salmon: Zheluo salmon is a pure freshwater fierce carnivorous fish with cold water. Most of the year it inhabits streams with low temperatures (below 15 °C) and rapid water. The gero is very gluttonous and is one of the most ferocious species of freshwater fish. Foraging time is mostly before sunrise and after sunset, swimming from deep water to shallow water shores to hunt for other fish and snakes, frogs, rats and water birds active in the water, and other times lurking on the shaded bottom of the stream.
6, crocodile eel: crocodile eel is a large and fierce fish, mainly living in pure fresh water, occasionally into brackish water. Crocodile eels are extremely destructive, if placed in natural waters, it will bring disaster to the local water ecosystem, "as long as it is a living thing in the water, it is almost all-consuming". Moreover, its eggs are highly poisonous. If a person goes to provoke it, or if it is frightened, there will be an attack on humans.
5. Six-whiskered catfish: Six-whiskered catfish are carnivorous and fierce fish, feeding on fish and other aquatic animals. It is not very lively, and during the day it mostly inhabits the bottom of the water body, and swims to shallow water at night to forage for food. He prefers to live in the main rivers and tributaries, and does not like to go to lake areas and flooding areas.
4, white sturgeon: white sturgeon is a fierce freshwater fish, they will prey on most of the small and medium-sized fish in the river. Today, the white sturgeon is rare and has become a nationally protected wildlife.
3, Amazon catfish: Amazon catfish is a giant catfish that can grow 4 meters long, they weigh up to 200 kilograms, can easily bite off human fingers, is a huge and fierce freshwater fish.
2, piranha: piranha, also known as piranha, is a fish distributed in the Amazon River in South America. With its sharp teeth and herds attacking large animals, the piranha becomes one of the most notorious animals. During his stay in Brazil, a group of goby fish was witnessed tearing a cow to pieces in just a few seconds. The goby has distinctive triangular teeth and is incredibly powerful enough to tear its prey apart. When they eat, they eat their prey cleanly, leaving only a pile of white bones.
1, golden raptor: golden raptor, huge teeth and piranha similar and very fierce. Very striking teeth, one or more dark spots, longitudinal markings, all of these characteristics and their "aggressive" notoriety are important factors in the derivation of the name "tiger fish". When they attack, their mouths are wide open and they press their teeth up to 3-6 centimeters into the body of their prey, and they also attack humans, and the flocks of golden raptors are arguably the most ferocious freshwater fish in the world.