The symptoms of hypoxia in black-shelled shrimps include the following three points:

1. The water quality becomes turbid: You can observe the water quality of the fish tank. If you find that the water quality in the fish tank becomes turbid, it means that the black-shelled shrimps are hypoxic.

2. Non-stop swimming: Black-shelled shrimps keep swimming in the water, which means they are very uncomfortable due to lack of oxygen.

3. The shrimp shells become soft or hard: You can observe the condition of the black-shelled shrimp shells. If the shrimp shells turn yellow and become soft or hard, it means they are in a state of hypoxia.

Causes of hypoxia in black-shell shrimps

1. If the number of black-shell shrimps is large, it may cause hypoxia, so when the black-shell shrimps are raised at a higher density When growing, pay attention to using a large tank for cultivation, and also pay attention to supplying oxygen to the water.

2. Too much chlorine in the water may cause the black-shell shrimp to be hypoxic. If you use tap water to raise black-shell shrimp, you must pay attention to dechlorinating the water.

3. The water quality may not be stable enough. Generally, you need to plant grass for a month after opening the tank, and then add shrimp after the water quality is balanced.