How to keep the fish alive?

1, the focus of spring management is correct feeding and disease prevention and treatment. The climate gets warmer in spring, and the ornamental fish become active after wintering, but their physique is relatively weak, so the feeding amount should be gradually increased. Due to the great climate change, we should pay special attention to keep warm when it is windy and rainy. In spring, bacterial viruses also multiply rapidly, and fish diseases are the most popular. Fishing with nets is easy to hurt fish, so we must pay attention to preventing and treating diseases.

This period of summer is the peak season for the growth of ornamental fish. The water temperature is generally above 30℃, and fish seldom get sick. If the bait is sufficient and the water is changed frequently, its growth is better than other seasons. The demand for oxygen is increasing, and preventing water from being deprived of oxygen becomes the key to feeding. Reduce stocking density, change water frequently to discharge pollutants, and pay attention to increasing oxygen, especially in hot and rainy weather. Pay attention to heatstroke prevention and cooling, and cover the water surface of 1/3 ~ 1/2 with bamboo curtain to prevent "tail burning" accident.

3. The focus of autumn management is feeding and feeding. Appropriately increase the proportion of nutrients such as fat and protein in feed. The weather is getting colder in late autumn, so the feeding should be gradually reduced. At the same time, gill rot, leukoplakia and dermatomycosis are also easy to break out, so it is necessary to prevent fish diseases.

4. Winter management focuses on cold and warmth, and proper feeding. The heating equipment in the greenhouse or aquarium makes the water temperature generally not lower than 20℃. Or use the function of residual hot water in the factory to maintain a suitable water temperature for normal breeding and reproduction. Prevent fish from getting sick or freezing to death due to sudden drop of water temperature (especially at night).

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Feed point:

1. Check all parts of the fish: whether there are pests in koi fish, and observe whether there are rotten fins, rotten mouths, perforations, scales, erythema, discoloration, etc. Observe whether the fish is getting thinner, which is caused by malnutrition. Observe whether the fish body is edema and whether the abdomen is drooping, which is caused by the fact that the female fish can't lay eggs and stay in the abdomen to rot. When the fish is swollen, it will develop into vertical scale disease (also called pine cone disease), which is obviously caused by internal organs. Observing whether the fish is bent is often caused by improper or excessive medication. Observe whether the eyeball is normal. If it is abnormal, it is mostly caused by visceral diseases. Don't find it too late, there is no cure for eyeball collapse. Observe whether the fish gills are open and closed normally. For dead fish and diseased carp, pull out the gill cover and observe whether there is deformation, foreign bodies, parasites and excessive mucus secretion.

2. Check the swimming style: When koi fish is healthy, he will swim in all directions; When he is ill, koi fish will swim around alone; When he is seriously ill, he will stumble and even have no strength to stop swimming and even hit the wall of the pool. Koi fish forms a circle in the corner of the fish pond or rubs the wall or bottom of the pond with his body, indicating that parasites have been attached to the fish. In severe cases, koi fish rubs his body, slaps his dorsal fin and pectoral fin, or jumps. If koi fish swims standing on his dorsal fin, it is generally a sign of nervous system diseases. Koi fish's winding body is an abnormal signal of koi fish. Staying still on the water is a danger signal. Being unable to stand upright is a state of losing balance. There may be something wrong with the swim bladder, or there may be parasites on the head. When he is seriously ill, koi fish will swim around.

3. Check your appetite: koi fish's appetite will drop when he is ill. Try to observe the situation when feeding until you finish eating. Be careful not to let the leftovers sink and rot, which will affect the water quality and accelerate the occurrence of fish diseases. There are many reasons for anorexia, such as hypoxia, ammonia increase, water temperature change, parasitic infection, virus infection, visceral diseases and so on.

4. Check the feces: The status of feces and urine in koi fish is also a sign of koi fish's health. Sometimes fish feces will appear on the surface of the pool water, which is proof of indigestion and should be stopped immediately. Feces lighter than pool water are not good. When koi fish's feces are white and gelatinous, it is a dangerous signal that the intestinal mucosa is shedding. If not treated immediately, enteritis and perforation will occur.

References:

Koi fish-Baidu encyclopedia