How to prevent fish gasping for air at the water surface in autumn? Farmers can refer to these 6 measures

In the golden autumn season, gasping-for-air incidents occur repeatedly during pond aquaculture, and in severe cases cause large-scale fish deaths in ponds, resulting in serious economic losses for farmers. So why do fish gasp for air at the surface? What preventive measures are there?

Why are fish prone to gasping for air in autumn?

Climate change is often the triggering factor for farmed fish gasping for air and for disease outbreaks. When the air temperature suddenly rises or falls, causing the water temperature difference between the surface layer and the bottom layer of the pond to exceed 5°C, fish gasping for air can be induced.

Therefore, farmers should actively pay attention to weather changes, strengthen management, and adopt corresponding measures to avoid fish gasping for air and reduce losses.

6 major measures to prevent fish from gasping for air as the golden autumn season arrives

1. Pay attention to weather changes. When the air temperature fluctuates, turn on the aerator at noon (14:00) for 2 to 3 hours. For the last feeding in the afternoon (16:00), decide based on the day's weather to feed less or not at all (a full belly does not tolerate low oxygen).

2. After 0:00 at night, strengthen pond patrols and handle any problems promptly.

3. Strengthen water quality management and add fresh water at the appropriate time.

4. Check whether the hardware facilities are operating normally.

5. Improve the pond bottom. As the feeding amount increases, fish excretion increases, and a large amount of feces sinks to the bottom, consuming severe amounts of oxygen during decomposition. In the high-temperature season, biological and chemical substrate improvers can be used regularly to improve the bottom. For example, use “Dibeikang + Hailianke 202” to improve the bottom.

6. Fertilize the water. The main purpose of fertilizing the water is to cultivate algae abundance. As is well known, oxygen produced by algal photosynthesis accounts for 70-80% of the total source of dissolved oxygen in the water. The abundance of algae in a pond is crucial to aquaculture ponds. Within a certain range, the greater the algae abundance, the more oxygen is produced, the longer the oxygen supply time can be extended, and the more the situation of fish gasping for air at night can be alleviated. In the high-temperature season, Bacillus bacteria and high-quality fertilizer products can be used to fertilize the water, keeping the water body at a suitable fertility and vitality. If the water is clear and lean, use “Hailianke 3101 + water-fertilizing agent + quick phosphorus supplement” to fertilize the water; if the water is too dense, use “Hailianke 3101 + Shuangshuibao + quick phosphorus supplement” to stabilize the water.