Black carp is a kind of freshwater fish, which will be distributed near the bottom in freshwater, so it belongs to benthic fish. They usually stay at the bottom of the water and seldom float close to the surface. If the black carp floats up, then the specific reasons are as follows:
1. Anoxia in the water: The black carp has certain requirements for the dissolved oxygen in the surrounding water environment. If the dissolved oxygen in the water is insufficient, then the black carp will make some abnormal reactions. For example, at this time they will float up and go to a place close to the water surface to breathe more oxygen. This situation is more common in winter and summer when the air pressure is hot and low.
2. Problems with the swim bladder: The swim bladder is one of the important structures of fish, and this structure can help the fish maintain balance when they are at rest. If the swim bladder of the herring is out of order, the herring may float up.
3. Fish death: The herring may die in the water for various reasons. If the herring has died, it will not remain at the bottom, but will rise to the surface.
1. When breeding: If the black carp cultured in the fish pond floats, it is likely that the oxygen is insufficient. At this time, it can be solved by artificial oxygenation. If there is a problem with the swim bladder of the black carp, the fish body can be inspected and remedial measures can be taken.
2. When fishing: When fishing, it is also possible for the herring to float up. At this time, it is necessary to adjust the depth of fishing reasonably to catch the black carp in the upper layer.
