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Effective prevention methods for fish surfacing in summer
I. Prediction of fish surfacing 1. In summer, strong sunlight and high temperatures during the day, and weather in the evening. Sudden thunderstorms or a south wind during the day with high water temperature, then a sudden turn to a north wind at night, causing the water temperature to drop rapidly. 2. Continuous overcast and rainy weather, low air pressure, muggy conditions, weak wind, and foggy weather. 3. Long periods of clear weather without rain, fish feeding vigorously, dense water color, and sudden weather changes. II. Rescue of fish surfacing, 1. Add fresh water Adding fresh water increases dissolved oxygen, improves water quality, and expands the range of activity for fish. 2. Turn on the aerator
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Key Points and Methods for Comprehensive Prevention and Control of Fish Surfacing
From June to October each year, temperatures are high and the weather is muggy. If fish are stocked at excessive density and water quality deteriorates, it can easily cause fish to surface due to oxygen deficiency, or even suffocate to death. In severe cases, all pond fish can die within 1 to 2 hours. Therefore, correctly analyzing the causes of fish surfacing and identifying the signs and severity of fish surfacing is of great significance for strengthening routine management and promptly rescuing fish from pond turnover. (1) Causes of fish surfacing. There are mainly the following aspects: (1) Blindly overfeeding and overfertilizing, resulting in excessively fertile water, massive proliferation of plankton, rising oxygen consumption by organic matter and declining dissolved oxygen.
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