Fish health is an important part of owning a pet fish. It is important to ensure that your fish remain healthy and happy in their environment. A good fish keeper will be aware of the signs of fish health problems, and will be able to provide the necessary care to keep their fish healthy. This includes regular water changes, proper nutrition, and the right environment for the species of fish. It is also important to research the type of fish you are keeping, as different species have different needs when it comes to water parameters, diet, and tank conditions. It is also important to be aware of common fish diseases and how to prevent them, as well as how to treat them if they do occur. Finally, it is important to be aware of the signs of stress in your fish, and how to reduce it. Taking the time to research and understand your fish's needs is the best way to ensure they remain healthy and happy.