The reasons why the black arowana does not eat are as follows:

1. Frightened by the change of the environment: the environment inside and outside the tank where the black arowana lives has changed. For example, the increase or decrease of polyculture fish in the tank, the replacement of the background of the fish tank, the change of the layout of the objects outside the tank, the noise from the speeding of the car in the street, etc. will affect the state of the black dragon fish, thereby affecting the feeding. In this case, the black arowana needs to rest and recover slowly.

2. Improper feeding: out of the owner's kindness for loving fish, Worrying that the black arowana is not full and fed too much bait, it will take a while for the black arowana to digest these foods, so there will be a situation of not eating. Therefore, it is recommended to adhere to the principle of seven or eight full, small and many times, so that the black arowana can always maintain a strong appetite.

3. Poor water quality: As the saying goes, raising fish and raising water, black arowana is more sensitive to water quality. When black arowana does not eat, you can first check whether the water quality is normal. When the water quality is not good, such as the pH value changes, the water temperature changes sharply, etc., the black arowana will not eat.