The most important thing for raising fish is to change water. For small tropical fish, it is generally necessary to change water once a week. If the filtration system in the fish tank is relatively good, the water quality can be well maintained, and it can also be changed once half a month. The amount of water for each change can not be too much, generally accounting for a quarter of the total. Be careful when changing water, it is better to pump out the old water first, and then pour in the new water from the tank wall, so as not to cause water quality fluctuation and water temperature change.
Tropical fish are basically omnivorous fish, some are carnivorous, herbivorous is relatively small. According to the food habits of fish, we should choose more suitable food for them, so that fish can grow fast. You can also consider feeding artificial fish feed, but the particles should be moderate, so that the fish can eat, and will not enter other parts of the bait, causing it to get sick.
The most important thing for keeping tropical fish is the water temperature. If the temperature changes, the fish will feel uncomfortable immediately. Usually, the temperature should be maintained at about 20-30 C. Some tropical fish with strong cold resistance can tolerate the low temperature of 16 C., but no lower. It is worth mentioning that the appetite of fish is often related to temperature, the higher the temperature, the more it likes to eat.
If the fish has symptoms of illness and needs timely treatment, first of all, change the water for it to keep the water clean and sanitary. Secondly, it is necessary to raise the temperature appropriately, and it is enough to raise the temperature by about 1-2 degrees Celsius. Then salt is added to the water, and the concentration of salt is between 0.3 and 0.5%. If the situation does not improve, you need to put medicine in it.
