If you want tropical fish to survive, you should first pay attention to controlling the water temperature. This kind of fish requires a high temperature, and the water temperature should be kept between 20-30℃. Pay attention to feeding at ordinary times, usually 1-2 times a day. If you feed live bait, pay attention to disinfection. Change the water once a week, usually a quarter. If you are sick, you need to shorten the water change cycle, increase the temperature and add salt, or give it medicinal bath treatment. First, pay attention to the water temperature Since it is to raise tropical fish, we must pay special attention to the water temperature. This kind of fish is different from cold-water fish, the latter has a wide range of adaptation to water temperature, while the former can only survive in waters of 20-30℃. For some low-temperature tolerant varieties, the minimum temperature should not be lower than 16℃, while the water temperature of difficult varieties should be kept at around 26-27℃, and a slight change will affect their survival.

Second, feeding tropical fish regularly requires regular feeding, usually artificial feed and live bait, so that fish will not be picky eaters and can supplement a variety of nutrients. It should be noted that the number of times of feeding should not be too many, and feeding 1-2 times is enough. Pay attention to observation when feeding, and don't continue feeding when the fish is full. In addition, if you feed live bait, you must disinfect it to avoid making it sick.

Third, the method of changing water Tropical fish should change water once a week. If the filtration system is good, it can be changed once every half month. You must use the intercepted tap water to change water, and you can dry it a few days in advance. Pump out the old water at the bottom of the fish tank, clean up the residual bait by the way, and then replenish new water from the tank wall. It should be noted that the temperature difference between new water and old water should not be too large, generally around 1-2℃.

Fourth, disease treatment If the tropical fish is sick, the first thing to do is to stop feeding, and then change the water the next day to reduce the content of sick sentences in the water. After changing water, the temperature should be raised appropriately to stimulate the fish's own resistance, and at the same time, a little salt should be added to change the osmotic pressure of the water body and reduce the water penetration. If it doesn't get better, you can fish out the sick fish, soak them in medicine and put them back.