There are some shining cells under the eyes of the black arowana, which are like searchlights and can emit red light. Compared with other fish, their mouths are larger, and their stomachs are flexible, so they can swallow food larger than their own size. If you want to raise black arowana well, the key is to keep the water quality and temperature constant. This is extremely important to their lives. Generally speaking, it is not very difficult to raise them.

1. Water body: It is more appropriate to expose the tap water for raising black arowana, remove chlorine from the water, and then put the fish into the water. Otherwise, chlorine gas in water may harm fish. In addition, it is recommended to equip a complete set of filters in the water tank, which can not only clean the water quality, but also increase the dissolved oxygen in the water.

2. Water change: Regular and appropriate water change can ensure the cleanliness of water quality. For them, they need to change water at least twice a month.

3. Water temperature: Although they can accept a wide range of temperatures, they cannot adapt to sudden changes in water temperature. Therefore, when raising, it is best to put the water tank in a place where the sun can shine and keep the water temperature between 22-32 ℃. Pay attention to when changing water, do not inject water at one time, but inject it slowly, and control the temperature difference not to exceed 2 ℃.

4. Feeding: For them, feeding high protein foods is the best. However, they are not picky eaters. Whether it is granular feed or active bait, they are acceptable.