2. After the fish is in estrus, the abdomen of the female fish gradually expands, and at this time, the male fish is not short of chasing the female fish. When the connector of the male fish is inserted into the reproductive hole of the female fish, the sperm is discharged for in vivo fertilization.
3. It is a sign of labor when the abdomen of the female fish is obviously swollen, from white to black, and the anus is prominent.
Note: Red arrow fish is easy to cross with moonlight fish. If you have moon fish at home, please keep them separately when you breed them at ordinary times to ensure the purity of swordfish species.
Extended data:
Matters needing attention in the breeding period of swordfish
1. When the mother fish has a wide belly and swims alone, it can be kept alone in the breeding pool.
2. Try not to stimulate with new water, and let it happen naturally.
3. The temperature must be kept constant.
4. The culture container must be large, and the swordfish yield is high. Therefore, if the production tank is too small, there will be many problems. Generally, the length and size of fish tanks are about 40 cm, so the water level of fish tanks should not be raised. They have the habit of jumping when they are frightened.
5. The mother fish must stand for three days after production, and then put it back into the original tank, that is to say, it is best to prepare the breeding tank and rest tank of the mother fish.
Baidu encyclopedia-hongqi fish