Causes of hypoxia in crucian carp in winter and fishing skills to deal with hypoxia

A boat on the river, a fisherman wearing his webworm moth; Fishing alone is not afraid of snow and ice. Winter is very unfriendly to fishermen, because it is very uncomfortable to fish in the snow in winter, and many fish don't talk, so they can only target a few fish with strong cold tolerance, such as crucian carp. According to common sense, the temperature in winter is low, the air pressure is high, and the dissolved oxygen content in cold water is higher, so crucian carp is generally not anoxic. However, when fishing for crucian carp, fishing friends often encounter hypoxia in crucian carp. Why? Next, let's talk about the reasons for the lack of oxygen in crucian carp in winter and the fishing skills to deal with it.

First, phytoplankton in the water decreases in winter.

After winter, the number of phytoplankton in water will decrease, and photosynthesis of phytoplankton in water is one of the main sources of oxygen in water. If the weather changes suddenly and it rains and snows, the photosynthesis of plankton will be weakened, the respiration will be enhanced, and a large amount of oxygen will be consumed in the water, resulting in hypoxia in the water.

Second, the water freezes in winter.

When the water surface temperature is lower than 0℃, the water surface will gradually freeze, and the oxygen in the air cannot enter the water, resulting in the gradual lack of oxygen in the water body. When ice and snow cover the ice, sunlight cannot directly shine into the water, and green plants in the water cannot produce oxygen through photosynthesis, but consume oxygen, which will lead to serious hypoxia in the water.

Third, fish often gather underwater in winter.

After winter, freshwater fish such as crucian carp have the habit of holding groups to keep warm. Most crucian carp gather at the bottom of the water, which will lead to hypoxia in the waters near the fish schools, and some crucian carp with poor physique will suffocate and die due to hypoxia.

Fourth, fishing skills to deal with the lack of oxygen in crucian carp

When fishing crucian carp, if there is ice on the surface of the water body, it will break the ice; If you are fishing for crucian carp in a black pit, you must let the boss of the black pit turn on the aerator, and the crucian carp will be active immediately; When making a nest, you can sprinkle some oxygen-increasing particles in the nest to increase the oxygen content in the nest and attract more crucian carp into the nest.