The Amazon River is located in the north of South America, is the world's largest flow, basin and tributary river, ranking the second largest river in the world. There are many aquatic animals living in the waters of the Amazon River, including the world's largest freshwater dolphin, which can reach an adult length of about 2.6 meters.
Of course, there are thousands of species of lightfish in the Amazon river, but there are also many aggressive aquatic animals, such as the fearsome piranha living here, and some amphibians are inferior to pythons, crocodiles and dozens of turtles and turtles.

Crocodiles, pythons and piranhas, these are fierce carnivores, have a place in the Amazon River, although a few of them are fierce enough, but they are somewhat inferior to the electric eels in the Amazon River, because the ferocious crocodiles are afraid of it for three points.
Electric eels, which inhabit the Amazon rivers, usually choose areas with slower currents, and they stick out their heads like yellow eels, breathe air on the surface of the water, and dive into the water again. The electric eel is not good at marching and is slow to move, swimming by the flick of its fin.
But this does not affect its position in the Amazon River, because its tail is with the launch point function, the "killer" of the electric eel is the high voltage electricity, with a second to kill any kind of water depth animal in the Amazon River, the voltage can be up to 300 ~ 800 volts in an instant, so the electric eel is also known as the "high voltage line" in the water.
The powerful current of the electric eel can kill the enemy or prevent the enemy from invading, even the ferocious amphibian crocodile in the Amazon River does not dare to compete with the electric eel, because once the friction occurs, even if the crocodile is not electrocuted, it can only choose to die with it.
The crocodile in the picture above is biting the passing electric eel, the electric eel instantly released high voltage electricity, the huge crocodile electrocuted, but because the crocodile bit the electric eel, the electric eel could not escape, and eventually the crocodile and the electric eel died by the Amazon River.
In the process of discharge, the electric eel will be hit by the sudden high-voltage electricity on its back, because the organs of the electric eel discharge are on both sides of the body, and the organs and surface of its body have high-performance insulation functions.
However, if the part of the electric eel discharge is injured and damaged at the same time, a short circuit will occur at this time. The lethality generated by the voltage released by the electric eel is based on the body and physical state of the electric eel, usually distinguishing between the two stages, the larger the body, the stronger the voltage of the electric eel.
According to relevant research demonstrations, electric eels can discharge about 50 times per second, the voltage will decrease with the number of times, the electric shock range is between 3 and 6 meters, but the duration is about 15 seconds, but the electric eel can be discharged again as long as it takes a little rest, or supplements some food.
The electric eel sometimes does not discharge for predation, or to defend against attacks, according to its physiological characteristics, it needs to release an electric current from time to time. Therefore, innocent aquatic animals that are electrocuted by electric eels are not in the minority, even exceeding the food it needs.
The electric eel, known as amazon's top killer, can not escape the small dining table, although it can release high-voltage electricity, but the South American natives in order to catch the electric eel, first drove the southern cattle into the water, waiting for the electric eel to release the electricity, and then went down to catch the electric eel.
Finally, the electric eel that crosses the Amazon River was once selected as one of the "Most Feared Freshwater Animals on Earth" inventoried by the National Geographic magazine website, so when we go out to travel and fish, we must not provoke it, so as not to go back!