the water? Generally, the fish heating rod should be placed near the bottom of the tank. You can choose to put it obliquely or horizontally, so that the heat dissipation effect is better. Because the water near the heating rod will rise when it gets hot, the cold water will fall, which is more conducive to warming up. If it is placed vertically, because the upper and lower water temperatures change together, the effect of heat conduction will be slower, which reduces the efficiency of heating.
? 1. Goldfish: Goldfish is a wide temperature fish, which can survive in the environment of 0-30 C, so it can be kept alive without a heating rod. However, it should be noted that because its activities are affected by temperature, it will not like to eat in low temperature season, so it is better to control the temperature between 18-26 degrees Celsius.
2. Koi: Koi and carp belong to the same family and genus, so they have the same adaptability as carp, and can develop normally in 5-30 ℃ water. Even in winter, it can swim deep to avoid the cold. At this time, it often eats very little and even enters a dormant state.
3. Tangyu: Tangyu, also known as Baiyun Jinsi, is a kind of fish in the south of China. It is very small in size. Although it lives in the south, it is also relatively resistant to low temperatures, even at 5 degrees Celsius, it can still live normally, so it can be raised well without a heating rod.
