be raised in the open air in a

canvas fish pond. Because of the characteristics of canvas fish ponds, it is difficult to control the temperature of the water body. It is only suitable for raising some eurythermic fish. It will not be a problem in the open air. It can also promote the growth of plankton, accelerate the photosynthesis of plants, and help the health of fish. However, we should also pay attention to the rainy weather, which may bring some problems.

2. What

should be paid attention to in the canvas fish pond in rainy days? 1. Proper drainage: The biggest problem is that the canvas fish pond is placed in the open air. Rainwater will accumulate in the pond, which will lead to excessive water level or even overflow. Once the overflow occurs, the fish may escape with the current, which will cause losses, so it needs to be observed. And drain water in time.

2. Reduce feeding: As we all know, the air pressure in rainy weather is relatively low, so it will also lead to a decrease in dissolved oxygen in the water body. Fish need to consume oxygen for digestion, in order to ensure their survival, it is necessary to reduce feeding, so as to avoid a large amount of oxygen consumption and prevent the occurrence of hypoxia and other phenomena.

3. Pay attention to rainproof: If it is a general light rain, it will not be a big problem, but heavy rain will not work, so it is better to prepare a rainproof shed, so as to avoid rainwater entering the pool, in order to prevent the impact on water quality, and then health problems.