1. Reason: Arowana's concave eyes may be caused by visceral inflammation, for example, they swallow sharp food, which leads to scratches on their intestines or stomach, infection and inflammation.
2. Treatment: Breeders need to feed them with some antibiotics, such as penicillin, azithromycin and amoxicillin. If you can't eat, you can inject it into your mouth with a needle.
II. Bacterial infection1. Reason: The sunken eyes of Arowana may also be caused by bacterial infection, for example, the eyes are infected by bacteria because they are not treated in time after injury. Or the wound is inflamed and bacteria grow in the water.
2. Treatment: Breeders need to change water immediately to keep the water clean. And use gentamicin or Baiyanjing to give them a medicated bath. During the medicated bath, the breeder needs to stop feeding and increase oxygen. Adhere to the medicated bath for 3 days, and the concave eyes may be alleviated.
III. Overdose of drugs1. Reason: Arowana's eyes are sunken, which may also be caused by overdose of drugs. If the breeder feeds them too much drugs or uses them in medicated bath, they will be poisoned.
2. Treatment: Breeders need to change water immediately to reduce the amount of medicine in water. It is also necessary to raise the water temperature to 30 ℃, so as to improve their metabolism and help them quickly expel drugs from their bodies.