Euthanizing a fish is a difficult yet sometimes necessary decision for fish owners, aquarists, and hobbyists alike. Whether due to disease, severe injury, or simply old age, the need to ensure that the process is as humane as possible is paramount. Unlike terrestrial animals, fish possess unique physiological and neurological characteristics that can complicate euthanasia methods. It is essential to approach the topic with sensitivity and awareness of the ethical implications involved. Humane euthanasia is defined as a method that minimizes suffering and distress for the fish. As awareness grows around animal welfare, it becomes increasingly important for fish owners to educate themselves on the best practices for euthanizing their…