Generally, red arowana in seedling stage can grow 1-2 cm in a month, but they are not very long in adulthood. Most of the time, the external environment mainly affects the length of this fish, and of course its own genes are also very important. The suitable water temperature for the growth of red arowana is 26 ℃, which will seriously slow down their metabolism, thus affecting their growth.

When the water quality is bad or polluted, their growth will be affected, and even more, they will get sick. In addition, if you are a novice in raising red arowana, because you have no feeding experience, there will inevitably be mistakes in feeding and daily water change, which will also affect their growth.

The life span of red arowana is usually 20 years, which is relatively long compared with other fish. Their vitality is much stronger than other fish. Some fish may starve to death if they don't feed for a day or two, but red arowana won't starve to death even if they don't feed for half a month. The reason why many people like to raise arowana is that they are convenient to feed and don't bother too much. Although their life span is about 20 years, if they don't pay attention to the details of feeding every day, it will easily lead to their short life span, so we should pay attention to taking good care of them when raising them.