My two arowanas haven't eaten for almost 1 month. What happened?

1. The fish is in a hurry.

When the water temperature, pH value and hardness change too much, the fish will shrink into a ball. If not handled properly, it will often be caused by mixed infection of other pathogens.

Treatment methods should focus on prevention, and pay attention to the changes of water quality and water temperature. When adding new water, pay attention to slowly mixing with old water, so that the fish can gradually adapt to the new water. When fish diseases occur, pay attention to keep the water quality stable. If the water quality is poor, a large number of suitable water should be replaced, and drugs should be used to control pathogen infection if necessary.

2. Alkaline diseases

When the water quality is extremely alkaline, fish are prone to get this disease. The symptom is fin weakness, and the only way to prevent it is to change the water frequently, keep the water clean and the pH is appropriate.

3. Atrophic diseases

When the fish is placed too close and the bait is insufficient, the fish is in a state of semi-starvation for a long time, which makes the fish shriveled and emaciated, with a big head and a small tail, a back as thin as a blade and a black body color. Eventually collapsed and died.

Pay attention to giving enough bait and increasing nutrition, and the fish will soon return to normal growth.