2, lighting: lighting is very important, everything grows on the sun. It is best to put the fish tank in a bright place. When the light is 1-2 water, it can be sterilized by ultraviolet rays, which can reduce diseases. Try to give priority to disease prevention, supplemented by drug treatment. 3. Feeding: It is best to feed nutritious and digestible animal feed. Such as Daphnia, earthworm and other feeds. Feeding should be regular and quantitative, and it is not advisable to feed more. 4. Stocking density: rectangular aquariums in China are not suitable for raising more, but it is not suitable for raising less. For example, in a container with a length of 40 cm, a width of 25 cm and a height of 30 cm, you can raise 6 to 8 small goldfish with a length of 5 to 7 cm. For example, a round glass jar with a diameter of 26 cm and a height of 13 cm can raise 4 ~ 6 small goldfish with a diameter of 4 ~ 6 cm. Adult fish with a body length of more than 8 cm should not be kept in small glass tanks, but in luxurious large glass tanks or ceramic tanks, and equipped with small oxygenators for standby to prevent hypoxia. These stocking densities are only reference figures, but also depend on the level of water temperature, the strength of fish and the quality of water, which cannot be determined mechanically. Generally speaking, there are large fish and few animals. Raise more in winter and less in summer; You can raise more when the water temperature is low, and raise less when the water temperature is high.
Domestic goldfish, if you master the above points, will certainly make goldfish healthy and lively, colorful, swimming around in the water, loved by people, so that you can never get tired of watching it and have fun. I am sure I can raise it. I wish you success!