The sultry weather is the most common in summer, and fish will float to absorb oxygen. Why?

There has always been a saying in the fishing industry that fishing is deep in summer and fishing on the beach in summer. This sentence summarizes the life law of fish in summer, and also points out the idea of choosing points for us fishermen. Because the temperature is relatively high in summer, it is also the most active season for fish. In addition to resting in deep water and enjoying the cool, they also go to shallow water for food.

In summer, the weather is hot, the temperature difference is relatively small, and the standard air pressure will be reduced to some extent. The thermal convection in the sea area is getting slower and slower, and the speed of oxygen transfer from shallow water to deep water will be affected. In this case, the heavier the waterline, the less oxygen. At this time, Pisces will have an increase in oxygen supply.

We can learn from the upward adjustment of Pisces. When the weather is hot, the theme of fish activities will also change. In that case, can everyone choose to float at this moment? Therefore, when fishing in summer, if the weather is hot, we must change the habit of fishing at the bottom and choose shallow offshore water with sufficient oxygen, firmly believing that the fish mouth will be greatly improved.

Fish live in water and breathe through gills. The algae in the pond can carry out photosynthesis during the day, but they can't do it at night without light, but they still have to do it. Algae in the pond can carry out photosynthesis during the day, absorb carbon dioxide in the water and release oxygen. Without light at night, photosynthesis of plants can't be carried out, but photosynthesis still needs to be carried out. Oxygen is consumed by water. Fish live in water and breathe oxygen dissolved in water with their gills. At dawn, because fish and algae living in the water have to breathe in overnight, the dissolved oxygen in the water is low, which affects the inhalation of fish.

Slightly low dissolved oxygen makes fish live in water, and the key source of oxygen supply is dissolved oxygen. When the dissolved oxygen is slightly lower, the popularity of fish species decreases, and they are not active in finding food, which is mainly due to the upward adjustment from the bottom. When the dissolved oxygen is too low, it will even float to the river surface, resulting in "fish floating"! The main reasons that harm dissolved oxygen are weather and water temperature!

Fishing lovers all know that it is not good to fish without wind in hot summer! What is the reason? In hot weather without wind, the standard pressure is slightly lower and the temperature is higher! A slightly lower standard air pressure will affect the penetration of oxygen into water, making the dissolved oxygen in water slightly lower. Moreover, no wind enters the quiet sea surface, which reduces the contact area with gas and reduces the penetration of oxygen into water. At the same time, the higher the water temperature, the lower the hemolytic oxygen saturation of water! Therefore, when there is high temperature, low pressure and windless weather, the dissolved oxygen is very low, the popularity of fish species is poor, and foraging is not active!