Fish that we keep are not always healthy and can be attacked by disease. If the fish you keep is sick, especially ornamental fish that have a high price, of course we will feel sad. Sometimes we can't feel that the fish we keep is sick or not. To avoid unwanted things such as fish experiencing severe pain and even death, we need to know how to check the pet fish is sick. This is useful so that we can take action or first aid against sick fish. Fish diseases can attack fish suddenly and unpredictably. To find out if your pet fish is sick, you can pay attention to the following signs: 1. Behavioral changes in fish. Fish that usually swim actively suddenly become limp or do not move at all. Sick fish may also tend to hide or look stressed. 2. Loss of Appetite. If your fish suddenly loses its appetite or when fed the fish refuses food, this could be an indication that the fish is not feeling well or is experiencing health issues. 3. Changes in Color or Physical Appea...