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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 ty...

Do fish sleep? | The Fisheries Blog

thefisheriesblog.com/2014/03/09/do-fish-sleep/

Mar 9, 2014 ... The short answer is yes; most fish do sleep. ... Researchers monitored the sleep patterns of normal Zebrafish and those that lacked a functional ...

Do Fish Sleep with Their Eyes Open? | Wonderopolis

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

Apr 23, 2014 ... Think about your sleep habits and how they might appear to a fish. You might think it's weird how fish sleep, so what do you believe fish would ...

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

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

The answer to the question “do goldfish sleep?” is one of the most common things new goldfish keepers want to know about their fish.

www.ask.com/youtube?q=Sleeping Habits of Fish&v=GemJIEO9AFw
Mar 16, 2012 ... My angelfish that I've had for three years has done this every night.

Some Fish Facts by Aquarium Professionals Group

www.aquariumprofessionals.com/article_fishfacts.htm

Do Fish Sleep? Fish do sleep. Most fish don't have "eyelids". If the aquarium lights are left on for twenty-four hours a day, the fish will not sleep. They will become ...

Sleeping fish - Seafriends

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

Swhowing how fish sleep and how some are nocturnal. ... Perhaps they relax their bodies and their skins, and the colours and patterns that then appear, are ...

Do Fish Sleep? - PetPlace.com

www.petplace.com/article/fish/general/understanding-your-fish/do-fish-sleep

Jun 15, 2015 ... It is believed that fish sleep, although it is a controversial subject; some ... One of the favorite habits of the clown loach, which has alarmed most ...

Do Betta Fish Sleep? Learn How to Take Care of a Betta Fish!

www.bettafishfacts.org/do-betta-fish-sleep/

Betta fish do sleep. All living creatures need to rest. Sleep is a must for survival. It is just that the sleeping habits differ in each. Sleeping habits differ in fish ...

Sleeping Habits of Raccoons | Animals - mom.me

animals.mom.me/sleeping-habits-raccoons-7610.html

You may have heard them knock over your trash cans in the evening, as these furry critters will eat everything from berries to garbage. Raccoons sleep during ...

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

How do fish sleep? | The Big Question

bigquestion.wordpress.com

Mar 4, 2008 ... They don't have eyelids to close, they sometimes do it during the day, they don't show the characteristic brainwave patterns like REM sleep ...

How Do Fish Sleep | Sleep.org

sleep.org

Find out the truth about whether or not fish sleep. ... And their normal sleep patterns fall by the wayside during moments like migration, spawning, or when they ...

sleep in fishes - howfishbehave.ca

www.howfishbehave.ca

Most sleep researchers, being focused on mammals, recognise sleep when they see distinctive patterns of electrical activity of the brain. Fish, however, lack the.