Generally speaking, the sexual maturity time of female fish is 9 months, and that of male fish is 14 months. The premise of breeding is to select mature and excellent angelfish species, prepare the breeding tank and water, and make sure that the parent fish is healthy and disease-free. When a pair of colorful fish occupy territory in the aquarium and start to ovulate, they are ready to breed.

Second, the preparation of aquaculture tank equipment:

1. Aquaculture box: The best size is 45*45*45. A breeding pond can only be used for one pair of parent fish to breed, and other fish will eat young fish and attack each other.

2. Air pump: Seven-color fish farming needs a quiet environment, so the air pump should choose a smaller air outlet to avoid scaring the parent fish and reducing the success rate of farming.

3. Biochemical cotton: There is generally no filter in the culture box to prevent young fish from being sucked away by filtered water. Therefore, biochemical cotton is selected as the filtration equipment.

4. tubing: tubing can attract female fish to ovulate, and it is best to put it in the center of the fish tank. Female fish are used to laying eggs in hidden places, such as behind the conveying pipe. Production tubing should have a wide bottom, not a narrow bottom. Don't use half of the production pipe, and don't turn the production pipe flat, but stand upright in the cylinder.

5, lighting equipment: parent fish are forbidden to have strong light irradiation, which will lead to unsafe fish and reduce the success rate of reproduction.

Extended data:

Spawning and hatching:

After the parent fish is put into the culture pond, it is fed 1 time every day to keep the red worm alive. This is the preferred feed. It takes about a week from spawning of parent fish to hatching of young fish. During this period, a small amount of water should be changed and fed, and the amount of steam in the feeding tank should be avoided. If it is too big, the spawning tube should be placed on the other side of the steam stone to avoid affecting the spawning of parent fish in different directions; The light is darker than normal? , should not be changed.

Before giving birth, the parent fish began to shake their heads, wag their tails, and kept cleaning the ovipositor with their mouths. The fallopian tubes of female fish and? About 30 minutes after the male fish's vas deferens protrude, the female fish begin to lay eggs from bottom to top along the ovipositor? Then the males ejaculate along the laid eggs, and some males will repeat. The whole ejaculation process takes about 60 minutes? About. From then on, they began a six-day arduous incubation process.

The young fish hatch about 55 hours after spawning, when the parent fish is stimulated by the young fish? There is an expression of "milk juice". Both males and females keep sucking the swimming young fish to the ovipositor with their mouths, or sucking them to places they think are safe to concentrate? Get up, take turns to fan the water for the young fish to breathe and take care of their healthy growth.

In this way, after about 70 hours, the young fish began to three? Five groups swam to the parent fish and sucked the milk secreted by the parent fish. During this period, we should pay attention to changing water, changing one-third of fresh water every day. And increase the water exchange capacity to half a day. Young fish can "nurse" for more than seven days. After seven days, they can leave their parents and eat alone. Young shrimp.

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