Eel is commonly known as eel, belongs to the class of fishes, the order of gills, the family of gills, the subfamily of eels. Is a kind of fish, body like a snake, but no scales, skin color has green, yellow two kinds, the big ones have two, three feet long. Like quiet, usually lying still underwater.
Lives in mud holes and rock crevices near the water, comes out in summer, and hides in holes in November and December.
The eel is about 20.70 centimeters (8.28 inches) long, scale-less or with very small scales, the dorsal and anal fins are very low and continuous around the end of the tail, and the gills usually have an external gill pore only at the throat. The anterior segment is tubular, gradually flattened laterally to the tail, and the caudal end is flattened and thin. The whole body is naked and scale-free, the head is large and conical, and the muzzle is pointed.
The mouth is large, terminal, with the upper jaw slightly protruding, and in some species the gills themselves are very small, relying on oxygen inhaled through the mucous membrane of the larynx or intestines for respiration. The body is elongated and serpentine, rounded anteriorly and laterally compressed posteriorly, the tail is pointed and thin, and the head is long and rounded.
The upper and lower jaws and muzzle bones are finely toothed. The eyes are small and covered by a thin skin. The left and right gill pores are united on the ventral surface in a "V" shape. The gill membrane is attached to the gill isthmus. The body surface is generally lubricated with fluid to facilitate escape, and is scale-free.
The eel is a tropical and warm-temperate fish, the benthic life of the fish, adaptability, in rivers, lakes, ditches and rice paddies can survive.
During the daytime, it likes to burrow in the humus silt or burrow in the watery rock crevices along the embankment.
Little activity in the daytime, night out of the hole for food. Gills are not developed, but with the oral cavity and the laryngeal cavity of the inner wall of the epidermis as a respiratory auxiliary organs, can breathe air directly; in the water is very poor in oxygen, can also survive. Out of the water, as long as the skin is kept moist, within a few days will not die.
The eel is an omnivorous fish that feeds on a variety of small animals, and is greedy, feeding most vigorously in summer, and not eating for a long time during the cold season, without dying.
Snakes are a general term for reptiles with degenerate limbs, belonging to the suborder Serpentes of the order Reptilia. As with all reptiles, snakes are covered with scales.
All snakes are carnivores. There are currently more than 3,000 species of snakes in total*** worldwide.
The body is elongated, with degenerate limbs, no movable eyelids, no ear holes, no limbs, no forelimb bands, and the surface of the body is covered with scales.
Some are poisonous, but most are not. There is also a snake in the Chinese Zodiac.
All snakes in the world are carnivorous, and the largest known snake ever to have lived is the Titan python, which was 15 meters long and weighed more than a ton. The largest known snake in existence is the boa constrictor, which can be up to 6 meters long and 100 kilograms, and the smallest is the cara fine blind snake, which is only 11 centimeters long.