Fish will not drown. Drowning is caused by asphyxia caused by the influence of gas exchange after water enters the respiratory system. For most fish, respiration requires water to pass through the respiratory system, their gills, and through blood vessels in the gill filaments to exchange gases, so drowning is impossible. Although fish will not drown, it does not mean that fish will not suffocate in the water.
1. Water anoxia: Water anoxia is the main cause of fish suffocation. The dissolved oxygen in the water is low. It may be because there are too many fish, resulting in a large demand for oxygen, or there are too few aquatic plants, resulting in insufficient oxygen produced by photosynthesis. In either case, it is necessary to oxygenate in time and plant some aquatic plants at the same time.
2. Disease: If the fish suffers from some gill-related diseases, such as gill rot, or is invaded by parasites, it will also cause hypoxia and asphyxia. In this case, the need for medication, for parasites can be used insecticides, bacteria caused by words, it is necessary to sprinkle bactericidal drugs, but also pay attention to disinfection and so on.
3. Changes in water quality: Poor water quality will also affect the breathing of fish, resulting in hypoxia. Regularly remove the bottom of the garbage, but also reasonable feeding, control the amount of feed, usually can sprinkle lime water to improve water quality, but also pay attention to check the pH in water, if too strong alkaline will also cause respiratory disorders, need to be adjusted in time.
