Eels reproduce by spawning in the deep sea and growing in freshwater environments. Small fish only finger length and can not distinguish the sex of the time, they flow into the river, until the growth of the adult body can distinguish the sex of a few years later, they return to the sea again for mating and spawning. Eels are fish, and can be categorized from the environment they live in, mainly into marine fish and freshwater fish. Eels are much more nutritious than sea bass, chicken or beef, and it has a higher content of vitamins, minerals and trace elements than land animals.

A, eel how to reproduce

1, the eel is mainly in the deep sea spawning reproduction, and then grow in the freshwater environment. Generally small fish only finger length and can not distinguish the sex will flow into the river, until the growth of adult body can distinguish the sex a few years later, they will return to the sea again to mate and spawn.

2, the eel is a kind of fish, if from the living environment of its classification, it can be divided into sea fish and freshwater fish. The difference between sea fish and freshwater fish is relatively large, and their living environment is also very different. But eels are more special, and they must not be classified into one or the other, because they belong to both freshwater and sea fish.

3, eel nutrients than bass, chicken, beef, a lot higher, it contains vitamins, minerals and trace elements content is not comparable to land animals, scientific research shows that eel is one of the highest EPA and DHA-containing fish.

Second, the difference between eel and eel

1, the difference between the family

(1) eel

eel belongs to the animal kingdom, chordata, vertebrates, subphylum, bony fishes, spoke fins subclass, the eel order, eel suborder fish.

(2) Eel

Eel belongs to the animal kingdom, phylum Chordata, subphylum Vertebrata, class Scleractinia, subclass Spinopoda, class Hoplocanthidae, family Hoplocanthidae, and eel belongs to the genus Tropical and Warm Temperate fishes.

2, the difference in appearance

(1) eel

① eel fish body length of 6cm or so, weighing 0.1 grams, the head is narrow, the body is high, thin and transparent very much like a leaf, so it is called willow leaf fish.

② Its body is almost the same as seawater, so it can save energy with the current for long-distance drifting, the largest adult fish 45cm, weighing 1600 grams.

(2) eel

① eel body length of about 20.70 centimeters, no scales or with very small scales, dorsal and anal fins are very low around the tail end of the continuous, generally only the throat has an external gill aperture, anterior section of the tubular to the end of the gradually flattened, the tail end of the flattened thin, all bare without scales.

② It has a large, conical head, pointed muzzle, slender serpentine body, the body rounded in front of the rear part of the lateral compression, the tail is pointed and thin, the head is long and round.

3, origin difference

(1) eel

① China's eel is mainly distributed in the Yangtze River, the Minjiang River, the Pearl River Basin, Hainan Island and rivers and lakes, the world's eel grows mainly in the tropical and temperate regions of the waters.

② In addition to the European eel and American eel in the Atlantic Ocean, the rest are distributed in the Indian Ocean and the Pacific Ocean region.

(2) eels

① eels have green, yellow two kinds, the big ones are 2-3 feet long, preferring a quiet environment, usually lying underwater, living in the mud holes at the water's edge and in the crevices of the rocks.

② They come out in the summer and hide in caves in November-December, and they are distributed all over Sichuan, Yunnan, Guizhou, Chongqing, Hunan, Ezhou, Anhui and Henan.