How to breed shellfish

1. Selection of broodstock: The selected broodstock must be strong, and the gonads must be fully mature. The female and male broodstock used must be estrus at the same time. The broodstock must have the characteristics of the species, and the male and female broodstock should usually be intimate. Avoid the selection of tropical fish with similar ancestry or ancestry as broodstock to prevent deterioration of offspring quality caused by inbreeding. Broken fins, disabled and deformed tropical fish are not home-made broodstock.

2, the preparation of breeding tanks: due to different breeds of broodstock, breeding tanks are also different. The breeding tanks with large tropical fishes that produce buoyant eggs are usually used, and the tanks with smaller area are produced with sink eggs. For tropical fish with less stringent water quality, an ordinary fish tank can be used, and a glass tank with strict water quality is required. Before use, the fish tank will be cleaned and disinfected according to the water quality and water temperature required by various tropical fish breeding, and the water will be adjusted and injected into the tank. The height of the water will 1/3-1/2 of the height of the breeding tank. The bottom of the tank is filled with sand, aquatic plants, stones, etc., but it is not possible to stock turtles and swords.

3. Incubation of fish eggs: Water temperature, water quality, hardness, dissolved oxygen, pH, and light all affect the hatching of fish eggs. The fertilized fish eggs begin to divide from the animal poles, and finally hatch larvae through the cleavage stage, the double pupa stage, the blastula stage, the primitive gut stage, the embryonic maturity stage, and the hatching stage.

4. Feeding of larvae: Newly hatched larvae take yolk sac as a nutrient. After they are free to swim, they begin feeding. The larvae feed on the worms, then feed on the wheel worms, and finally feed the screen broths. The water does not change the quality without changing the water. When the water needs to be changed, the new water should not exceed 1/10 of the volume of the raw water. The larvae's money cylinder is placed as far as possible at a constant temperature. When larvae grow up, they should be bred according to their size. The fish tank feeding larvae must not be mixed with the larvae of the water dragonfly, the otters.

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