The butterfly's tail is going to lay eggs. What should I do?

Generally, idle fish ponds and wooden pots are used to dry fresh water first. After the parent fish is put in according to the ratio of male to female, the male fish occasionally swims quickly with the female fish. In the future, the phenomenon of chasing is frequent and the chasing time is getting longer and longer, indicating that the parent fish is about to give birth. A few days later, the male fish chased the female fish, and his head pressed tightly against the female fish's abdomen for a long time, which was a sign of spawning. At this time, fish nests should be set up in the spawning pool in time. Then how to make an artificial fish nest? The materials of the fish nest are Fowei 'ao (called Honggenzha in the bath), Ceratophyllum japonicum, willow root, brown silk and raw hemp silk (willow root and jing silk have to compete several times before they can be used). Myriophyllum Kunqu is widely used in Beijing, widely distributed in rivers, pits and ponds, and can be used for fishing. It is soft in texture and does not damage the body surface or scales of parent fish. Specific methods: clean the algae to remove aquatic insects and its eggs which are harmful to fish, or use l0ppm(ppm is ppm, such as 1mg in 1kg and 1mg in 1l water) potassium permanganate solution for disinfection. Then cut into small pieces about 30 cm long, dozens of them are bundled (the circumference of each bundle is subject to the degree that the thumb and forefinger can be closed), tied with ropes and hung in the middle of the spawning pool. For a 2-meter-square spawning pond, just hang a string on both sides of the pond, leaving chasing waters for the parent fish.

How to raise goldfish? It is not an environmental factor that promotes goldfish gonad to mature and lay eggs, but several factors work together. When the water temperature rises, fresh water is supplemented, and the opposite sex stimulates the parent fish, if the new stimulation of egg attachment is added, the spawning can be promoted. So the parent fish will lay eggs and breed the day after the fish nest is set up. The spawning climax is usually from 4 am to 10. When the female fish is extremely excited by the fierce chase of the male fish, she swims to the upper part of the fish nest, hits the water surface with her tail fin to make waves and lays eggs at the same time. Only in passive water can eggs be more evenly dispersed and attached to fish nests. After the female fish lays eggs, the milky semen discharged by the male fish quickly spreads in the water and communicates with the eggs for fertilization. When laying eggs on the surface of the fish nest, the fish nest should be gently taken out of the spawning pool in time and put into the incubation pool for incubation. If the spawning fish nest is not taken out of the spawning pool in time, the parent fish will repeatedly lay eggs on it, resulting in overlapping fish eggs. Reduce the hatching rate, or cause fertilized eggs to be swallowed by spawning parent fish, resulting in losses. Goldfish spawn in batches, only three batches can be produced in a year, and the interval is generally 8- 12 days. Each batch of spawning begins in the early morning and ends at noon, but there are exceptions, such as ending spawning before noon or starting spawning in the afternoon. Therefore, it is necessary to correctly judge the end time of goldfish spawning, and separate male and female parent fish in time to avoid losses caused by swallowing fertilized eggs. Generally speaking, if the male fish is found to be lazy or sink to the bottom for a long time after spawning, the male fish will stop chasing the male fish crazily and feed on their own until they swallow the eggs or the spawning pond has recovered calm, which can be regarded as the end of a batch of spawning behaviors. You can fish out the male and female parents, put them in different tanks and raise them carefully.

Dystocia may also occur when the parent fish lays eggs, so it is necessary to pay attention to observation at any time. Once the abnormality is found, the reason should be found out, the water temperature should be raised, or the parent fish should be put back into the old water to rest, or medication should be given, such as using the hormone oxytocin. It can also be solved by artificial insemination.