Treatment of black angelfish bloating enteritis: protect food and not eat, the stomach is slightly bulging and do not defecate, use a disposable needle, and a disposable drip infusion set, remove the needle. Make a hose and a disposable needle tube into a set of medicine dispenser, divide the cephalosporin injection into 1/5, use the stored warm water (28~30 degrees) to spend 2ml of the medicine, the needle tube has a scale. Take out the black angelfish and gently insert the thin hose into the fish mouth 3~4cm, fill each fish with 0.5ml (about 10 cm of fish), and start defecation (transparent fish stool) in the same way. Fill the medicine once, after filling the medicine, observe whether the bowel movement is white, if the bowel movement shows that the medicine has played a role. When you don't have white stools, it means that you are already well and you can go home and rest, but it is normal if you don't eat, don't worry, you will eat slowly.

The bacterial gill rot disease of the black angelfish is treated with nitrofuracil. Parasitic gill disease is treated with potassium permanganate, formalin, and salt. Cottonmouth disease is also known as rotten mouth disease. The snout around the mouth of the sick fish has white cotton-like hyphae like velvet, also known as white mouth disease. Commonly used mouth touches the wall of the box to feed algae fish, which are prone to this disease and are easily contagious. Sick fish are difficult to feed and swim slowly and weakly, resulting in death. To be treated in a timely manner. Use penicillin or chlortetracycline solution or 10ppm oxytetracycline solution to bath sick fish. Aquariums, fishing nets, tools, etc. are immersed and disinfected with 0.1% formaldehyde solution. The temperature of the cold water suddenly changed, and the black angelfish suddenly suffered from unbearable cold stimulation.