Efficient propagation technique of mackerel

Mackerel has a variety of names, and in some places it is also called Megalobrama triangularis, which grows mainly in the Yangtze River area. Strong adaptability, relatively easy to breed, delicious taste, is the main cultured freshwater fish. The breeding of farmed mackerel is natural in the wild, but it can be propagated artificially. So it is necessary to introduce the specific methods of artificial reproduction.

1. Mature oviposition

The mackerel is sexually mature at the age of 2, and the Yangtze River region enters the spawning period in late April, spawning when the water temperature is above 20 degrees. The performance of the spawning period is that the body has pearls, and the spawning environment stimulates natural spawning in a micro-running water environment, but it can be cultivated separately in advance to induce estrus reproduction. Seedlings can be raised in batches according to the time of spawning.

2. Hatching of fish fry

After spawning, you need to hatch in running water, keep clean running water constantly, maintain the right temperature, and hatch separately in the nursery pond. Generally speaking, the fish fry will hatch in about three days. After hatching, the fish will gradually move, and they will not feed at first. After they can do so, they will need to be fed. They will need to be fed with boiled egg yolks and soy milk in a few days. After that, they will need to fatten up the nursery pond.

3. Feeding method

After feeding for two to three weeks, you need to divide the pond when you see the fish grow to 3 centimeters, because it is too crowded. After another month of breeding, we can see that the fish grow to almost 5 centimeters, and once scattered, about one mu of water surface can cultivate 40,000 fish fry, mainly culture plankton and feed soybean milk and aquatic plants. Continue to breed, mix some herring, feed duckweed and soybean cake milk. Grow to 10 cm to complete the seedling.

4. Points for attention

You can catch fish directly outside and breed them in the pond for a year before you can make them. You are free to choose a combination of mature parent fish, and hormones can be used to induce delivery. Need to set up fish nests to facilitate the attachment of eggs. Can be artificial egg collection and fertilization, treatment of blessing hatching, which can shorten the time of reproduction. But not as good as natural spawning and fertilization.

Mackerel is a common farmed freshwater fish, reproduction requires good species of fish, mature eggs, normal fertilization. The incubation is successful and the survival rate is high.