The weather has been sunny and the temperature has risen in recent days. So for fishermen, should we fish deeper or shallower?
Different fish have different swimming layers, which are mainly determined by the fish’s living habits and oxygen demand. There are differences in the temperature and content of different water layers. First of all, let’s talk about oxygen content. The oxygen content in water is affected by atmospheric pressure. At the same time, the deeper the water, the greater the underwater pressure and the smaller the oxygen content.
Secondly, because the surface water is in direct contact with the air, the heat conduction between the air and the air is more direct. Therefore, the temperature of the surface water changes most immediately and quickly, according to the impact of temperature on the volume of water. On a sunny day in winter, the temperature of the surface water rises rapidly due to sunlight. At this time, the volume of the water increases and the density decreases. The water with a relatively high temperature is always on the top layer. From a temperature perspective, the fish are comfortable at this time. Region is at the top.
When fishing in summer, it is better to fish on windy days on sunny days, especially northwest wind and car wind temperatures are the first choice. If you go out on a sunny day, fishing depth is usually the main focus. In fact, in addition to fishing deep, there is also the concept of fishing in the shade, because the temperature of the water in the shade is also cooler except in the deep water. However, experience shows that big fish will continue to like to hide in deep water because it is safer. Fish such as grass carp and more The area that likes to hide in the dark side may have something to do with the fish body size and the ability to withstand pressure. You cannot blindly follow the trend when fishing deep. You should choose deep water locations such as Huajian, Bay, both sides of dams, and slopes. Rainy days are the hottest temperatures in summer. When fishing in light rain or after heavy rain, you should also focus on fishing shallow. Especially in flooded areas, there are big fish at depths of tens of centimeters after heavy rains.
Fish are cold-blooded animals, which are small animals that change color. These basal body temperatures will change with changes in the external temperature. It has a certain temperature control mechanism, so it can absorb the external temperature or use its own activities to control the body's body temperature, thereby surviving faster. In the case of fishing, there are many reasons that influence how well it actually works, and the main forms it takes. For example, among the temperature factors, temperature is a very important aspect and has a very important impact on fishing. One of the first areas to be affected is the shade of fishing.
The difference between the different swimming layers mentioned above is actually the same as the density of water. Deep water is equivalent to the bottom layer, while shallow water is equivalent to the middle and upper layers. This is very easy to understand and is equivalent to As far as deep water is concerned, the oxygen content in shallow water is higher, and direct sunlight can penetrate, so the heat exchange between the temperature of the water and the surface water is rapid. Therefore, on sunny days in winter, many fish will rise.