What to Do When Shrimp Swim at the Surface of the Pond? Six Causes and Countermeasures
Six Causes and Countermeasures for Shrimp Swimming at the Surface of the Pond
(Agricultural Wealth Network) Shrimp swimming at the surface of the pond is a very common phenomenon in shrimp farming, and it can be roughly divided into the following six situations according to the causes.
1. Surface swimming due to lack of feed
This situation can occur in the early, middle and late stages of shrimp farming. It is mostly caused by insufficient feed or poor feed quality, which drives the shrimp to swim up to the water surface to seek food, and the shrimp show regular group swimming. If this occurs in the early stage, attention should be paid to cultivating the basic feed or feeding small-pellet shrimp feed. If it occurs in the middle and late stages, compound feed with strong feeding attraction, good palatability and comprehensive nutrition should be fed in time, and Weimian can be added to the feed to promote feeding, so as to avoid decline in the shrimp's physique or cannibalism.
2. Surface swimming in clear water
The main cause of this kind of surface swimming is failure to do a good job of fertilizing the water or massive reproduction of Noctiluca and similar organisms, resulting in excessive transparency, so the shrimp lie on the pond bottom without a sense of security and swim at the surface. The shrimp mostly show startling and easy jumping and group swimming. If it is caused by failure to do a good job of fertilizing the water, the measures to take are: 1. appropriately exchange the water and deepen the water level; 2. use ecological water-fertilizing paste or Lvshui No. 1 to fertilize the water. If it is caused by too many Noctiluca, add Chijing effervescent tablets and other products to kill the Noctiluca, then immediately fertilize the water body.
3. Surface swimming in abnormal weather
This is mainly due to sudden weather changes, which cause rapid changes in the physical and chemical factors of the pond water, and the shrimp are stimulated and swim at the surface. For example, after rain, the bottom water becomes warm, the surface water becomes cool, the water body stratifies, and the bottom layer lacks oxygen. The shrimp show group swimming up to the water surface after rain, and most of them have a certain directionality. At this time, the aerator should be turned on to stir the upper and lower layers of water evenly, and Jiedu Yingji Essence Liquid should be splashed over the whole pond. After two hours, Jinweian should be dissolved in water at a dose of 6 mu-m per bag and splashed over the whole pond.
4. Surface swimming due to lack of oxygen
This occurs at night and in stuffy hot weather. At this time, the dissolved oxygen in the pond water is relatively low, exceeding the tolerance range of the shrimp. Most of the shrimp float up and swim on the pond surface without a certain directionality, mostly swimming individually. In this situation, the following measures can be adopted: 1. turn on the aerator to increase oxygen; 2. exchange with fresh seawater; 3. use coated oxygen and other products for emergency rescue.
5. Surface swimming due to deterioration of the pond bottom
This situation is generally more common in aged shrimp ponds. Because shrimp have been farmed for many years and the silt has not been thoroughly cleared, more residual feed and excrement exist at the pond bottom. Under long-term oxygen-deficient conditions, harmful substances such as ammonia nitrogen and hydrogen sulfide are produced. When they accumulate to a certain level, they become unfavorable for the shrimp to hide, so the shrimp float up and swim at the surface. This kind of surface swimming has no obvious regularity; there can be both group swimming and scattered swimming, and it may occur on the pond surface or in the water. When encountering this situation, the following measures can be adopted: 1. regularly use Chidiqing and Diju Sujiean to improve the pond bottom substrate; 2. combined use of Bacillus strains, Nitrifying No. 1, and Youlao bacteria freeze-dried agent and other products to supplement beneficial bacteria in the water body and decompose excessive organic matter.
6. Surface swimming due to shrimp disease.
Shrimp infected with white spot, red body, gill rot and other diseases can also cause surface swimming. In this situation, the shrimp mostly swim slowly or swim wildly on the water surface, mostly swimming individually rather than in groups, and the shrimp show no obvious reaction when startled. Encountering this situation may be a precursor to the large-scale outbreak of shrimp disease. Close observation should be made, diseased shrimp should be carefully examined, and after diagnosis, the right medicine should be used to avoid greater harm.
1. Surface swimming due to lack of feed
This situation can occur in the early, middle and late stages of shrimp farming. It is mostly caused by insufficient feed or poor feed quality, which drives the shrimp to swim up to the water surface to seek food, and the shrimp show regular group swimming. If this occurs in the early stage, attention should be paid to cultivating the basic feed or feeding small-pellet shrimp feed. If it occurs in the middle and late stages, compound feed with strong feeding attraction, good palatability and comprehensive nutrition should be fed in time, and Weimian can be added to the feed to promote feeding, so as to avoid decline in the shrimp's physique or cannibalism.
2. Surface swimming in clear water
The main cause of this kind of surface swimming is failure to do a good job of fertilizing the water or massive reproduction of Noctiluca and similar organisms, resulting in excessive transparency, so the shrimp lie on the pond bottom without a sense of security and swim at the surface. The shrimp mostly show startling and easy jumping and group swimming. If it is caused by failure to do a good job of fertilizing the water, the measures to take are: 1. appropriately exchange the water and deepen the water level; 2. use ecological water-fertilizing paste or Lvshui No. 1 to fertilize the water. If it is caused by too many Noctiluca, add Chijing effervescent tablets and other products to kill the Noctiluca, then immediately fertilize the water body.
3. Surface swimming in abnormal weather
This is mainly due to sudden weather changes, which cause rapid changes in the physical and chemical factors of the pond water, and the shrimp are stimulated and swim at the surface. For example, after rain, the bottom water becomes warm, the surface water becomes cool, the water body stratifies, and the bottom layer lacks oxygen. The shrimp show group swimming up to the water surface after rain, and most of them have a certain directionality. At this time, the aerator should be turned on to stir the upper and lower layers of water evenly, and Jiedu Yingji Essence Liquid should be splashed over the whole pond. After two hours, Jinweian should be dissolved in water at a dose of 6 mu-m per bag and splashed over the whole pond.
4. Surface swimming due to lack of oxygen
This occurs at night and in stuffy hot weather. At this time, the dissolved oxygen in the pond water is relatively low, exceeding the tolerance range of the shrimp. Most of the shrimp float up and swim on the pond surface without a certain directionality, mostly swimming individually. In this situation, the following measures can be adopted: 1. turn on the aerator to increase oxygen; 2. exchange with fresh seawater; 3. use coated oxygen and other products for emergency rescue.
5. Surface swimming due to deterioration of the pond bottom
This situation is generally more common in aged shrimp ponds. Because shrimp have been farmed for many years and the silt has not been thoroughly cleared, more residual feed and excrement exist at the pond bottom. Under long-term oxygen-deficient conditions, harmful substances such as ammonia nitrogen and hydrogen sulfide are produced. When they accumulate to a certain level, they become unfavorable for the shrimp to hide, so the shrimp float up and swim at the surface. This kind of surface swimming has no obvious regularity; there can be both group swimming and scattered swimming, and it may occur on the pond surface or in the water. When encountering this situation, the following measures can be adopted: 1. regularly use Chidiqing and Diju Sujiean to improve the pond bottom substrate; 2. combined use of Bacillus strains, Nitrifying No. 1, and Youlao bacteria freeze-dried agent and other products to supplement beneficial bacteria in the water body and decompose excessive organic matter.
6. Surface swimming due to shrimp disease.
Shrimp infected with white spot, red body, gill rot and other diseases can also cause surface swimming. In this situation, the shrimp mostly swim slowly or swim wildly on the water surface, mostly swimming individually rather than in groups, and the shrimp show no obvious reaction when startled. Encountering this situation may be a precursor to the large-scale outbreak of shrimp disease. Close observation should be made, diseased shrimp should be carefully examined, and after diagnosis, the right medicine should be used to avoid greater harm.