The goldfish is a kind of tropical fish that is more difficult to breed. Only when the sexual function of goldfish is mature, will it find the opposite sex to mate and reproduce. But they can only be in estrus under the action of specific environmental factors, so they usually use artificial pairing method to make them mate. That is, a baffle with holes is inserted in the tank to separate the female fish from the male fish. When they are sexually mature, they will have a strong desire to mate. At this time, remove the baffle again, and they can be successfully matched. The female then lays eggs, which the male fertilizes. In order to ensure that small fish can hatch smoothly, male fish should not be allowed to hatch with eggs. The fertilized eggs should be taken out immediately and put into a special incubation tank. Keep the temperature of the incubator at about 28 degrees Celsius, and the fish will hatch in about 40 days.
It takes a long time for goldfish to reproduce from birth to spawning. Generally speaking, male fish can reproduce between 5 and 16 years old, while female fish can only spawn between 6 and 12 years old. Because they can only be in estrus and mating under the stimulation of specific environmental factors, the number of breeding per year is small. In the case of human intervention, it is very good that they can reproduce once a year.
