Fish are vertebrates, so they have a nerve reflex arc. Even if the brain stops its activity, as long as the wound is stimulated, there will still be a stress response, resulting in nerve convulsions. Generally, it is normal to sprinkle salt on the wound of a fish to make it move.
1. Uncomfortable water temperature: Fish are divided into cold-water fish and tropical fish, no matter what kind of fish, there are certain requirements for temperature, usually cold-water fish have a broad requirement for water temperature, but tropical fish are different, the temperature must be maintained between 20-30 degrees Celsius, if the water temperature is too low or too high. Will cause the fish to die.
2. Feeding too much: Fish are generally more resistant to starvation. They should not be fed too much at ordinary times. Otherwise, they will easily suffer from gastroenteritis. If it is serious, they will die. And too much residual bait in the water will also accelerate the deterioration of water quality, so that fish live in an unhealthy environment, increasing the possibility of disease.
3. Poor water quality: Any fish has certain requirements for water, and not all water can be used for fish farming. The quality of water determines whether the fish is healthy, if the water quality is poor, we should pay attention to replacement, water is generally pumped from the bottom, so that the residual bait and feces can be cleaned out.
4. Common diseases: If a fish is injured carelessly and the wound is invaded by germs, it will get sick. If it is not treated in time after getting sick, it will also die. Usually found in the disease, the need for the first time to change water, warming salt, if the situation is serious, it is necessary to give it a medicinal bath.
