CATDOLL : CATDOLL: Why can eels discharge electricity?

Electric eel - living in the Amazon River and Guiana River in South America, the electric eel looks very similar to an eel and is 2

The electric eel is about 1 meter long and weighs 20 kilograms. Its body is smooth and scaleless, with a black back and an orange-yellow belly. It has no dorsal or pelvic fins. Its anal fin is particularly long and is its main swimming organ. The electric eel is the freshwater fish with the strongest discharge capacity among fish, with an output voltage of 300

~800

volts, so the electric eel has

High Voltage Line

The basic structure of the electric eel's generator is similar to that of the electric ray, and is also composed of many electric plates. Its generator is distributed in the muscles on both sides of the body, with the tail end of the body as the positive pole and the head as the negative pole, and the current flows from the tail to the head.

Amazon discharge small-eyed fish - In some tributaries of the Black River in the upper reaches of the Amazon River, due to the long-term fallen leaves of the tropical rainforest covering the surface of the river and the blackened river water blocking the sunlight, the fish that originally lived in the shallow water layer have to seek living space at the bottom of the river. After years of evolution, the eyesight of these fish has weakened and their eyes have degenerated into small black spots, but at the same time they have evolved the function of body discharge for navigation. At present, there are at least 160 species of this type of discharge navigation small-eyed fish in the Amazon River Basin.

Electric catfish - Electric catfish are generally about 2 meters long and weigh about 20 kilograms. They have no scales on their body and no dorsal scales.

The electric catfish's electric organ is very special. It is composed of many electric plates in the body. These electric plates are distributed between the skin and muscles of the body. The head is the positive pole and the tail is the negative pole. The current flows from the head to the tail. When the electric catfish moves in the water, any part of the body touches the enemy or other objects, and a strong current is immediately generated to knock down the opponent. The electricity released by the electric catfish is generally around 150 volts, with a maximum voltage of more than 200 volts. Its effective range radius is about 6 meters.

Electric rays - an order of cartilaginous fishes

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There are 38 species in 10 genera in the family. There is a well-developed oval electric organ between the head and the pectoral fins.

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The electric organ of the electric ray accounts for 1/6 of its body weight. The potential of electricity generation is as low as 8 to 17 volts and as high as 220 volts, which is enough to paralyze an adult. The eyes are small, and the eyes of a few deep-sea species are degenerate. The nostrils are close to the mouth but completely separated from the mouth. The mouth is small or medium-sized. The gill openings are small. The dorsal fin and the tail fin have horny fin rays at the ends.

The pectoral and pelvic fins have no horny rays at their ends. The body is soft and generally smooth. The largest individual can reach 1 to 2 meters in length and weigh 90 kilograms. It is ovoviviparous. It moves slowly and lives on the bottom, often burying its body in the mud and sand. Most of them live in the intertidal zone. The deep-sea electric ray genus lives in the deep sea.

Electric rays are widely distributed in tropical and temperate seas.

Electric eels are freshwater fish with the strongest discharge capacity among fish, with an output voltage of 300-800 volts. Although electric eels emit direct current, the discharge frequency can reach 300 pulses per second. The damage caused by the discharge depends on the eel,