Did you mean: Do Fish Sleep with Their Eyes Open?
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Sleep in fish

en.wikipedia.org/wiki/Sleep_in_fish

Whether fish sleep is an intriguing question, to the point of having inspired the title of several popular science books. In birds and mammals, sleep is defined by eye closure and the presence of .....

Do Fish Sleep with Their Eyes Open? | Wonderopolis

wonderopolis.org/wonder/do-fish-sleep-with-their-eyes-open/

Apr 23, 2014 ... They are sleeping, and they can sleep at any time during the day or night. Fish do sleep with their eyes open, because they don't have eyelids ...

How do fish sleep? | The Big Question

bigquestion.wordpress.com/2008/03/04/how-do-fish-sleep/

Mar 4, 2008 ... You can see this in a fish tank or aquarium – some float motionless in place, some float ... fishe sleep but don't close there eyes the only shut do.

www.ask.com/youtube?q=Do Fish Sleep with There Eyes Open?&v=z6pQvWZemVc
Aug 3, 2009 ... Scientific study to see if fish do actually sleep. Evidently they do. ... ha ha, fish dont sleep they rest there dead :D. Read more. Show less. 1.

Do Goldfish Sleep? How, when and how can you tell? | The Goldfish ...

thegoldfishtank.com/goldfish-info/facts/do-goldfish-sleep/

Do goldfish sleep with their eyes open? Do goldfish sleep at night ... The answer is that goldfish do sleep, but not in the same way we do. Goldfish sleep is more ...

Sleeping fish - Seafriends

www.seafriends.org.nz/indepth/sleeping_fish.htm

Fish do not have eye lids, so they cannot close their eyes. ... Pelagic fish that sleep in the open ocean, descend to where waves are no longer annoying.

How Do Fish Sleep Without Closing their Eyes? » Science ABC

www.scienceabc.com/nature/animals/how-do-fish-sleep-without-even-closing-their-eyes.html

How in the name of God do fish sleep when they are surrounded by water all the time? Of course, they ... Therefore, they sleep with their eyes open! This has led ...

How Do Snakes Sleep With Their Eyes Open? | Animals - mom.me

animals.mom.me/snakes-sleep-eyes-open-8581.html

If they are not moving, it is difficult to tell whether snakes are awake or asleep. Sponsored Link. Eyes Wide Open. Snakes have no eyelids, so they can never close their eyes or blink. Instead of eyelids, thin ... All reptiles produce tears. The fluid ...

How Do Fish Sleep and Do Fish Close Their Eyes When They Sleep ...

superbeefy.com/how-do-fish-sleep-and-do-fish-close-their-eyes-when-they-sleep-at-night/

Jan 19, 2011 ... Fish can't close their eyes when they sleep, because they don't have ... Will My Eyes Pop Out of Their Sockets If I Sneeze With My Eyes Open?

Do Betta Fish Sleep? - Small Pets - LoveToKnow

small-pets.lovetoknow.com/do-betta-fish-sleep

The question still remains whether bettas experience sleep in exactly the same way that people do. After all, they can't close their eyes because they have no ...

Answer
Fish generally go into an energy saving mode of "rest" but do not "sleep" in the same way land animals do.
Since they do not have eyelids, they sleep with their eyes open.
More Info

Why can't fish close their eyes, do they sleep keeping their eyes open?

www.quora.com

Jan 24, 2015 ... Yes..!!! They are sleeping, and they can sleep at any time during the day or night. Fish do sleep with their eyes open, because they don't have ...

Do fish sleep? | The Fisheries Blog

thefisheriesblog.com

Mar 9, 2014 ... The short answer is yes; most fish do sleep. ... Though they are in a restful state, many fish are still acutely alert for danger – sleeping, in essence, with one eye open. ... Some parrotfish create their own “mosquito net” to sleep.

Why do fish sleep with their eyes open - Answers.com

www.answers.com

The purpose of the eyelid is to keep the eye moist. Fish live in water, and so the eye does't need moistening, and so fish don't have eyelids. Thus they sleep with  ...