Interesting!
The electric eel is an eel-shaped fish of the naked-back electric eel family. It is not a true eel, but is closely related to the species of Catfish. It can generate enough current to stun people. It is the freshwater fish with the strongest discharge capacity. The voltage can reach 300-800 volts, so the electric eel is known as the "high-voltage line" in the water. There are dozens of fishes known to generate electricity in the world, and other fish that can discharge electricity include electric catfish and electric rays.

The discharge capacity of the electric eel comes from the discharge body composed of its specialized muscle tissue. The muscles on both sides of the tail of the electric eel are composed of 6,000 to 10,000 muscle thin slices arranged regularly. There are connective tissues between the thin slices, and there are many nerves that directly lead to the central nervous system. Each muscle sheet is like a small battery, the voltage generated is very small, but a large number of "muscle batteries" connected in series, the highest voltage can reach 600 ~ 800V, enough to instantly knock people out (or even kill them). However, this high voltage can only be maintained for a very short time, which will consume a lot of energy from the eel.

In addition, there is no clear conclusion in the scientific community as to why the electric eel can not get electricity to itself (in some cases, the electric eel may also get electricity to itself). Some scientists speculate that the fatty tissue present in the electric eel has a good insulating effect, allowing the electric eel to adapt to the charged environment.