Signs before death of parrot fish:

1. Reduced activity level. The activity level of parrot fish will also be greatly reduced before death, but it does not decrease suddenly. Because after the parrot fish's body weakens, it can no longer support itself to swing its limbs to swim.

2. Loss of appetite. Decreased appetite is the biggest and most obvious symptom before death of parrot fish, because the organs in the parrot fish's body are about to fail, and the amount of exercise has also been reduced, so the parrot fish cannot and does not need to obtain more food and energy.

3. Scales fall off. Some parrot fish will also show symptoms of scale loss before the end of their lifespan, but not all parrot fish will have symptoms of scale loss before death.

4. The color becomes lighter. Before death, the parrot fish's scales will become lighter in color.

5. Shortness of breath. Most parrot fish will have shortness of breath before death. At this time, the parrot fish will also float its head, indicating that the parrot fish is hypoxic or has kidney problems