The parent fish of Pengze crucian carp should be mature individuals, which weighs more than 200g, is healthy and has no trauma, and has typical characteristics. The spawning pond area should be 0.6- 1 mu. 7- 10 days before spawning, clean and disinfect the spawning pond, and then fill it with 70cm deep water to prevent wild fish from entering the spawning pond. Use palm bark or willow roots as fish nests, soak them in 10-20g/m3 potassium permanganate for disinfection, and dry them in the sun.

When breeding, you can induce labor artificially or lay eggs naturally. Induced labor: every kilogram of female fish is injected with 800- 1200 international units of chorionic gonadotropin or 20-30 micrograms of luteinizing hormone releasing hormone analog. Male fish injection dose halved. One-time injection is used to induce labor, and the injection site is usually the scaleless part of the pectoral fin root. When the water temperature is 65438 08-20℃, the action time is 9-65438 06 hours, and the whole spawning duration is 6-20 hours. The hatching method of fertilized eggs is the same as that of other crucian carp. Natural reproduction: the selected female and male parent fish are put into the same cleaned and disinfected spawning pond according to a certain proportion. When the weather is fine and the water temperature is suitable, if the parent fish is found to be in estrus, it will immediately set up a fish nest and let it lay eggs and reproduce on its own. This method is simple and suitable for small batch production. The main disadvantages are long spawning period and inconsistent emergence time, which is not convenient for the next stage of feeding management.