? Goldfish usually sleep at night. In the evening, they will hide in dark places such as water plants or rockeries. Goldfish need a dark environment to sleep, so it's better not to turn on the light in the fish tank at night. Goldfish sleep time is not fixed, may sleep for a long time, may also sleep for a few minutes.
? Goldfish have no eyelids, so they can't close their eyes when they sleep. But if you look closely, you can also see if they are sleeping. They like to rest in a dark environment, so they will choose a dark and safe environment before going to bed, such as in the water grass, behind the rockery and so on. When they find the right position, they begin to slow down their breathing, stop moving, and become numb. This state is sleep. When goldfish sleep, their body color will become lighter, their front fins will swing slightly or their gills will open and close. These movements are mainly the physiological reactions of goldfish in order to maintain balance. The biological clocks
of goldfish and humans are similar, so it's better for breeders to turn off the lights in the fish tank when they rest, so that they can have a good rest. Goldfish should not suddenly turn on the light or speak loudly when sleeping, because this will frighten them. Although they will not show the state of shock directly after waking up, they will show the symptoms of shock every few hours.
