? Koi is an oviparous fish belonging to the family Cyprinidae. The reproduction of this kind of fish is generally divided into two situations, one is natural reproduction, the other is artificial reproduction. The natural breeding season is usually in April and May every year, when the water temperature should be above 18 C and the PH should be between 7.5 and 8.5. The male will chase the female all the way through the rut. During the breeding season, male fish will have white granular protuberances on their pectoral fins, which are called "chasing stars". After the breeding season, "chasing stars" will disappear automatically.
Artificial breeding is to squeeze out the eggs from the abdomen of the female fish, put them on the plate, then smear the semen squeezed out from the male fish on the eggs, and then stir them evenly to make the eggs fully fertilized. Then, the fertilized eggs after full fertilization are placed in a fish nest prepared in advance, and the fish nest can be made by binding willow bark to improve the hatching rate of the fish eggs. After two to three days, the eggs will become translucent or opaque, and a small black particle may appear inside the egg, which is the young fish that is about to hatch.
is the reproductive cycle of Koi? Under normal circumstances, it takes more than two years for young male Koi to reproduce, while it takes more than three years for female Koi to reach sexual maturity. The best time to breed is 3-6 years old for males and 4-10 years old for females. The breeding cycle of Koi is generally one year, and the breeding period is between April and June.
