need to sleep, many people think that goldfish do not need to sleep, because goldfish do not have eyelids, even if they sleep, they will not close their eyes. At the same time, goldfish do not need to lie down when sleeping, just stop in the water, can fall asleep, and each sleep time is very short, these factors will make people mistakenly think that goldfish do not need to sleep.
In fact, not only do goldfish need sleep, but sleep is very important for the healthy growth of goldfish. Want to know whether the goldfish is asleep, as long as careful observation, it is not difficult to find that when the goldfish sleeps, it will stop or tilt its body, its stomach against the bottom of the tank, at this time, if a few grains of fish food are fed, the sleeping goldfish will not pass.
a day. Goldfish sleep for a short time, usually 20-30 minutes, or even only a few seconds. Goldfish can sleep 2-3 hours a day, and can sleep about 10 times. Most of the sleep of goldfish occurs at night, and there are also naps. The sleep of goldfish will be affected by the external environment, such as the water temperature in the fish tank, the sound of the outside world, the brightness of the light or sunlight, and so on. Like humans, goldfish prefer to sleep in the dark.
