In recent days, the weather has been fine and the temperature has risen. So is it deep or shallow for fishermen?

Different fish have different swimming layers, which are mainly determined by their living habits and oxygen demand. The temperature and content of different water layers are different. First, the oxygen content is affected by the atmospheric pressure. At the same time, the deeper the water, the greater the pressure and the smaller the oxygen content.

Secondly, because the surface river is in direct contact with gas, the heat conduction with gas is more immediate, and the temperature change of surface water body is also the most immediate and rapid. According to the harm of temperature to the volume of water, the temperature of surface water is exposed to the sun, and the temperature rises rapidly in sunny days in winter. At this time, the volume of water increases and the relative density decreases, and the water with high temperature is at the top from beginning to end. From the temperature point of view, the comfortable area of fish is at the top floor at this time.

Fishing in summer, windy in sunny days, especially northwest wind and car wind temperature are the first choice. If you go out on a sunny day, fishing is generally the main thing. In fact, there is a view of fishing in the shade besides deep water, because the water temperature in the shady part of deep water is relatively cold, but from work experience, it seems that big fish will continue to like to hide in deep water. Because it is safer, fish, such as grass carp, prefer to hide in the shade, which probably has nothing to do with the fish's size and ability to work under pressure. You can't blindly follow the wind to fish deep, but choose deep-water parts such as tips, bays, dams and slopes. Rainy days are explosion-proof temperatures in summer. Shallow fishing is also the main way to fish in light rain and heavy rain, especially in flooded areas. After the heavy rain, there are also big fish in the depth of dozens of centimeters.

Fish are cold-blooded animals, that is, small animals that can change color and paint. These basal body temperatures will change with the change of the external temperature, and it has a certain temperature control and adjustment mechanism, so it will digest and absorb the external temperature or manipulate the human body temperature with its own theme activities, so as to survive faster. Take fishing as an example, there are many reasons that will affect the actual effect and main forms of fishing. For example, temperature is a very important aspect of temperature factors, which is very harmful to fishing. One of the first areas to get hurt is the shadow of fishing.

In fact, the difference between different swimming layers is the same as the basic principle of water shading. Deep water is equivalent to the bottom layer, and shallow water is equivalent to the middle and upper layer, which is very easy to understand. In deep water, the oxygen content in shallow water is higher, and direct sunlight can penetrate, so the heat exchange between water and surface water is rapid. So when the weather is fine in winter, a lot of fish will be raised.