Eel seedlings are bred by themselves.

1. Selection and cultivation of parent eel

As a breeding eel, it is required to be physically strong and active. The body color should be thick black mud, yellowish brown or black flowers, green brown. According to the source of parent eel, the wound caught in cage on the same day was smaller.

@ # @ 236 rice eel has the characteristic of sexual transformation. Monopterus Albus is basically female at the age of 1 and 2, and the proportion of males increases gradually after spawning at the age of 2, and is basically male at the age of 6. In the non-spawning season, it is difficult to distinguish between male and female, generally with body length and weight as the standard, with a body length of 37cm and a weight of 75g and 200g as male eel and female eel less than this standard. The ratio of female to male for reproduction is 2: 3 ∶ 1. During the spawning season, the abdomen of the female eel is dilated and soft, with obvious zona pellucida and egg outline in vitro, and the reproductive pore is red and swollen before spawning.

The stocking density of eel is 7 eels per square meter of water, 2 eels per square meter of water, 3 eels of male eel, 3 square meters of culture pool with a water depth of 25 cm, with plenty of irregular caves in the wall, and aquatic organisms such as water floating lotus (accounting for about 1 pound and 4 ponds). For shelter and concealment of rice field eel. The feed is mainly live @ 254mu @, @ # @ 261mu @, clam meat or snail meat, and the clam meat and snail meat are removed from the broken shell and carapace. The daily feed is 2.5%-8% of the body weight of fish, and once in the evening. In management, the residual bait should be removed in time and new water should be injected.

two。 Propagation and Seedling cultivation of Eel

Monopterus Albus can reproduce from May to September, and the peak period is from June to August. After the parent eel is mixed into the pool, the cultivation should be strengthened to promote gonadal development. The reproduction and spawning of Monopterus Albus are carried out in caves, and occasionally in stone crevices and fibrous roots of aquatic plants near the surface of the water. Generally guard until the eel seedlings come out of the membrane, Monopterus Albus spits a large number of bubbles near the cave when laying eggs, and the fertilized eggs are transferred to the nursery pool after hatching for one week. When the eel seedling came out of the film, the body length was only 1.1 to 1.2 cm, and the bottom of the side pool depended on the yolk sac for nutrition. Egg yolk was fed 5 days after emergence (screened with 50 mesh), rotifers were fed after 3 days, water worms and water fleas were fed after 1 week, surimi was fed 10 days later, the body length could reach 5 cm after 20 days and 25 days after emergence, artificial bait was added, and earthworm slurry was added. After 2 months, the body length reached 7 cm, and the seedlings could be raised in separate ponds. After 120 days of breeding, the body length could reach 8 cm 13 cm. There should be a certain silt layer at the bottom of the nursery pond. If there is no micro-flow condition, the water can be changed every 2 to 4 times, and the water temperature difference between the two places should not exceed 3 ℃.