Breeding tropical fish in winter and early spring
2018-04-21 15:00:51
Tropical fish species need wintering under warm water conditions. Tropical fishes are prone to frostbite during the winter and die. Their symptoms are mainly the snout and head congestion of fish. Some fish also have congestion in the mandible, cheek, dorsal fin base and base of pectoral fins. Some fish head scales are easy. Shedding; Some fish have ulcers at the top of the snout and head. Diseased fish swimming slowly, outliers alone, loss of appetite, and finally slowly died.
Under normal conditions, the winter temperatures are generally below 0°C, while the temperature of tropical fish needs to remain above 20°C. The difference between water temperature and air temperature is more than 20°C and the ambient temperature changes greatly. In the process of feeding, tropical fish often expose their heads to the surface of the water and expose them to cold air that is more than 20°C away from the water temperature. Repeated stimulation of the head by high temperature, low temperature, and high temperature can cause disturbance of nerve endings, dysfunction, malfunction, and inability to feed, resulting in death. For frozen fish, there is currently no good treatment, and prevention can only be done in advance. In view of the causes of frostbite, we have taken the following measures to prevent frostbite and reduce death.
First, the feed must be fed to the existing system in the winter can not feed the sun for several days dry pellet feed or puffed feed, dry pellet feed generally drift on the water for a long time, the fish will naturally show their heads to feed when feeding. The freshly prepared pellet feed contains a lot of water, which is quickly scattered in the water and the fish can feed on the water, thus reducing the chance of being exposed to frostbite on the water surface.
Second, to remove the feed powder in the pellet feed when the fish feeding the surface of the water must not have powder, in order to reduce the possibility of fish frostbite due to floating surface of the water to eat powder. The pellet feed is usually sieved with a 20 mesh crepe before feeding the fish.
Third, adjust the feeding time Since the beginning of the lunar calendar, the first time the fish feed every day from 8 am to 10 am. Because the temperature is lower at 8 o'clock in the morning, the water temperature and temperature are quite different. At 10 o'clock in the morning, the temperature gradually rises. The difference between the water temperature and the temperature is relatively small. At this time, the feeding of fish is started, which reduces the low temperature to fish to some extent. influences.
Fourth, adjust the temperature in winter as much as possible to adjust the greenhouse temperature to about 20 °C, in order to narrow the difference between water temperature and temperature, reduce the chance of frostbite.
Under normal conditions, the winter temperatures are generally below 0°C, while the temperature of tropical fish needs to remain above 20°C. The difference between water temperature and air temperature is more than 20°C and the ambient temperature changes greatly. In the process of feeding, tropical fish often expose their heads to the surface of the water and expose them to cold air that is more than 20°C away from the water temperature. Repeated stimulation of the head by high temperature, low temperature, and high temperature can cause disturbance of nerve endings, dysfunction, malfunction, and inability to feed, resulting in death. For frozen fish, there is currently no good treatment, and prevention can only be done in advance. In view of the causes of frostbite, we have taken the following measures to prevent frostbite and reduce death.
First, the feed must be fed to the existing system in the winter can not feed the sun for several days dry pellet feed or puffed feed, dry pellet feed generally drift on the water for a long time, the fish will naturally show their heads to feed when feeding. The freshly prepared pellet feed contains a lot of water, which is quickly scattered in the water and the fish can feed on the water, thus reducing the chance of being exposed to frostbite on the water surface.
Second, to remove the feed powder in the pellet feed when the fish feeding the surface of the water must not have powder, in order to reduce the possibility of fish frostbite due to floating surface of the water to eat powder. The pellet feed is usually sieved with a 20 mesh crepe before feeding the fish.
Third, adjust the feeding time Since the beginning of the lunar calendar, the first time the fish feed every day from 8 am to 10 am. Because the temperature is lower at 8 o'clock in the morning, the water temperature and temperature are quite different. At 10 o'clock in the morning, the temperature gradually rises. The difference between the water temperature and the temperature is relatively small. At this time, the feeding of fish is started, which reduces the low temperature to fish to some extent. influences.
Fourth, adjust the temperature in winter as much as possible to adjust the greenhouse temperature to about 20 °C, in order to narrow the difference between water temperature and temperature, reduce the chance of frostbite.