Field Capture, Living Habits and Artificial Cultivation of Monopterus albus

The living habits of yellow eel:

(1) caving (perching). Eel is a benthic fish living in fresh water, which requires a relatively stable living environment and likes to live in places with dark light, small water temperature difference and less human disturbance. Like to live in soft and humus shallow water and still water silt, about 30 cm from the ground camp life. Eels like to drill holes and perch, directly drilling holes without draining the soil out. There are two or more holes in the cave, and another one for breeding is called breeding hole, which is wider and more hidden. The burrowing property of eel varies with the change of temperature and water level, and the burrowing property of eel is also different in different regions and different specifications.

No matter which culture method is adopted, such as cage, courtyard, factory culture and soilless or soilless culture, the culture water level should be shallow, and fish nests or aquatic plants should be set up. It is found that although eels eat more without nests, they have more exercise and energy consumption, and vice versa, so it is best to adopt semi-shaded healthy culture, so that eels eat more and consume less so as to gain weight quickly and improve the efficiency of culture.

(2) sexual reversal. The eel has sexual reversal, first female and then male in life. From embryo to sexual maturity, that is, eel 1 Murray 2 winter age, body length less than 30 cm is generally female. After spawning, the female eel enters the female-male interbody stage, when the eel has no reproductive ability, and it is difficult to identify the sex. With the increase of age and body length, the female ovaries gradually turn into testes and transition to males. Eels with a body length of more than 50 cm are generally male and will be male all their lives.

The sexual inversion of eel was affected by nutrition, and the chronological reversal of food shortage was advanced. The feed with high calorie, high protein and high vitamin should be fed during the breeding period of female eel, which is beneficial to the reproduction and growth of eel. Because the growth rate of male eel is more than twice that of female eel, if necessary, the economic benefit can be increased by masculinizing eel beyond the breeding period.

(3) partial eclipse. Eel is a typical ferocious fish based on meat. Eating is heavy and greedy, with daily food intake accounting for 5% of body weight and 10% of body weight. Eels can also endure hunger, do not eat for a long time and do not die, but their body is thin, their resistance is decreased and they are prone to disease. Eels like to eat fresh bait, not unpalatable or rotten food, most like to eat small fish, shrimp, aquatic insects and other larvae, followed by terrestrial insects and earthworms, if the mussel, snail shell also like to eat. The feeding mode of eel is the sobbing type, which is rare in fish, and it can quickly attack and devour its prey within an effective range. If a certain kind of bait has been fed for a long time, it is also difficult to change its eating habits, so wild eels should be domesticated in a short time. According to this characteristic, a kind of artificial formula feed with long-term feeding, low cost and high meat gain rate should be selected. Where there are conditions, lights can be set up in the pond to lure insects into the pond for eels to eat.

(4) clustering. Eels like to gather in groups and can gather and divide, especially small eels. Its main purpose is to strive for more strength to adapt and adjust the living environment. Eels are abnormal if they often live alone or do not drill holes.