It takes about 1-6 months for the scales of Arowana to grow back, but when they grow back depends on the degree of injury and their own physique. If it is a silver arowana in the growth and development stage, the recovery speed will be faster. If the number of scales is small, it can grow in about one month. If it is a mature silver arowana, the recovery speed will be slower, and it will take about 3 months to grow back. Because their growth and development speed will slow down, so will their recovery speed. However, if the scale drop is serious, it will take a long time to recover. It will take about half a year or more.

1. Increase the activity space: The silver arowana may fall scales because of fighting. If breeders want to avoid them falling scales, they must ensure sufficient activity space. If arowana often fights, breeders need to keep them separately.

2. Reduce decorations: Silver Arowana swims faster. If there are sharp decorations in the fish tank, it will also cause silver Arowana to fall off scales. The breeder needs to take out the decorations to avoid scales. If Arowana is injured, it needs to be disinfected with 1% salt water and soaked in potassium permanganate solution.