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Not according to my observation. When they sleep, their eyes are still "open" but they do not seem to react to any movement outside the tank. So I think they somehow stop seeing things even with their eyes still "open". I think they are sleeping when they either stop moving and sink to the bottom of the tank, or when they move very little with their fins just to stay afloat. I also noticed that they tend to "raise" their head to a more "upright" position when sleeping. Once I noticed my goldfish did something very cute when she sleeps. She (I presume) hide her head behind a leaf, while resting her body on a small branch of a plant inside the tank.
Some fish do not have eyelids, so they cannot close their eyes when they sleep. However, some species of fish may exhibit a form of rest where they remain still or hide in a safe spot without closing their eyes.
Fish can't Close their eyes since they haven't got any eyelids.
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What is that which does not close its eyes while asleep?
Fish!!Certain lizards!Even a potatoe might be regarded as asleep in its quiescent state of hybernation beneath the earth with many eyes open!
What does it mean if a doll has blue sleepy eyes?
Blue sleepy eyes on a doll typically means that when you lay the doll down, its eyes will close as if it is sleeping. This mechanism is often found in vintage dolls and adds a realistic touch to the toy.
Do pupils dilate when sleeping and eyes are closed?
Yes, when you are asleep and your eyes are closed, your pupils typically dilate to allow more light to enter the eye. This is a natural response to the low light conditions during sleep, helping the eye to gather as much visual information as possible despite the darkness.
Is sleeping with your eyes open bad?
Sleeping with your eyes open, a condition known as nocturnal lagophthalmos, can lead to dry eyes, irritation, and potential infections due to increased exposure. It's important to consult with a healthcare professional if this happens frequently to prevent any long-term eye issues.
Why do people instintively close their eyes in bright light?
People instinctively close their eyes in bright light as a protective reflex to prevent damage to their eyes from excessive light exposure. Closing the eyes helps to reduce the amount of light entering the eyes and temporarily shields them from potential harm.
Do goldfish close there eyes when they are sleeping?
fish dont have eyelids
Do bats close their eyes while sleeping?
Yes, they do.
Does strong water flow stop tropical fish sleeping?
yes and no but they cant sleep cause they have no eyelids which makes it impossible to close their eyes unless they are dead or sleep with their eyes open
Do cats dream when they are sleeping?
no, they are awake the just close there eyes
Before sleeping do people close their eyes directly?
NO they dont
Do fish sleep with eyes open?
yes Being as snakes have no eyelids it is not possible for them to close their eyes, therefore they have there eyes continually open even when sleeping. This also gives rise to the myth that snakes hypnotise by staring at their quarry and are always ready to attack.
Do fish close eyes when swimming?
No.
Why fish open eyes during sleep?
fish open there eyes during there sleeping is because they are board at looking at nothing there its answered
Does the fish closing their eyes when sleeping?
interestingly they do not have eye lids to close their eyes with. They also don't really sleep. They rest with their eyes open. Their resting is some where between resting and being fully awake. The slightest ripple with rouse them.
Can fish swim why sleeping?
a fish sleeps with its eyes open...so you cannot notice whether its awake or sleeping..or even if it sleeps...it stays in one place
How fake sleeping?
Lie down and close your eyes -_-(try not to laugh if your like me)
Why do fish close there eyes?
Most fish can't close their eyes. Some of them don't have any eyelids! Some special fish,+alligators, have invisible clear eyelids that help them see underwater.
