in the water, the fish is not necessarily dead in the water, it may also be resting. Fish don't have eyelids, so they sleep with their eyes open, usually motionless, and only swim when disturbed, so it's easy to test by tapping the tank. When fish die, they usually sink to the bottom or float on the surface of the water, rarely maintaining a normal posture.
the death of fish 1, water quality is not good: usually fish will die, the main reason is that the water quality is not good. Not changing water for a long time will lead to the deterioration of the water body, the growth of harmful bacteria, and the increase of ammonia nitrogen content, which are harmful to the health of fish. Therefore, water should be changed regularly, usually once a week, not more than one third of the total water volume, so as to maintain water quality and not stimulate fish.
2, water temperature is too low: a lot of ornamental fish belong to tropical fish, they have higher requirements for water temperature, if the temperature is too low, the survival of the fish will also be affected. To avoid this, you need to use a heating rod to control the temperature in the water, and keep the temperature above 20 C, so that it can grow normally.
3. Disease factors: Fish are also easy to get sick when the season changes. If they are not treated in time after getting sick, they will die. Therefore, we should pay attention to observation at ordinary times to see if there is any problem with its swimming diet and whether there is any rotten and white place on its body. After discovery, we should use the old three methods to treat it in time. If it can't be cured, we need medication.
