in winter? As long as you pay attention to the temperature, fish are generally not easy to die. It is worth mentioning that fish are poikilothermic animals, so they are easily affected by temperature. If there is no heating rod to control the temperature, the vitality and appetite of fish will decrease when the water temperature drops, so it is necessary to reduce feeding. At the same time, the cycle of water exchange should be prolonged, and the growth of microorganisms at low temperature is also limited, so frequent water exchange is not needed.

2. What kind of fish does not need to be heated

? 1. Oryzias latipes: Oryzias latipes refers to the fish of Oryzias latipes of Oryziaceae. It is small in size and has a wide variety of species. The cultivated Oryzias latipes is a good ornamental fish. This kind of fish has a strong ability to adapt to temperature, so it can be fed without heating, but it is better to improve the breeding period.

2. Tangyu: Tangyu, also known as Baiyun Jinsi, is a unique fish species in China. At present, it has basically disappeared in the wild, but there are many artificial breeding. This kind of fish is suitable for growing in weak acidic water, has a mild temperament, and can accept many kinds of food, so it is relatively easy to raise.

3. Guodou: Guodou is the abbreviation of Chinese fighting fish. Different from the common Thai fighting fish, this kind of fighting fish in China has very good adaptability, especially in low temperature environment, so it is also suitable to raise in winter, and it is not easy to raise to death.