2. During the feeding period, change the water at least 20%-30% every week, and the ammonia content shall not exceed 0. 1 ppm (mg/ 1). Ensure normal water temperature and stable PH value. If the water temperature and water quality suddenly change, arowana will die suddenly. Be careful when changing water, so as not to scare arowana. It is best to test the national health and pathogen content once a week to ensure the healthy growth of arowana. When raising arowana, you must avoid completely replacing it with fresh water, otherwise it will do harm to the fish. If you see the fins and scales of arowana fall off, it is caused by too much water change. You can stop changing the water, and they will recover naturally. However, the amount of water exchanged should not be too small. Too little will make the fins opaque and the eyeballs turbid, leading to gills turning over.
3. Because arowana is a large fish, it is best to require the size of the fish tank to be 1.5m long, 0.5m wide and 0.7m high. The fish tank must be covered at any time, because arowana belongs to the upstream fish and likes to jump around to prevent people from jumping out of the tank and choking to death.
4. Arowana needs a lot of light, and it is best to have 4 hours of light every day. For example, to raise arowana, you can choose red light to irradiate arowana, which is better. It is best for arowana to choose sunlight, because long-term use of light will darken the back of arowana.