Do fish sleep?

Question

I think they do but im not sure,they seem to have their eyes open all the time which could just mean they sleep like that

Answer 1

I have answered this question so many times I sound like a broking record. Fish do not sleep, they go into a state in where their system slows down, and they rest(much like how me and you sleep)but theirs is more like a suspended animation. This Will happen when the room is dark and the tank light is off, and it may happen in the day time when you don't even notice, when you fish stop for 20 seconds and just sit there that's what they are doing, resting. So fish do NOT sleep, but more like rest.

Answer 2

Do Fish Sleep

Answer 3

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Answer 4

This Site Might Help You.

RE:
Do fish sleep?
I think they do but im not sure,they seem to have their eyes open all the time which could just mean they sleep like that

Answer 5

Don't ever take the sleeping pills route!!

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The sleeping pills industry is damaging our health by capitalizing on our ignorance, and by distracting people from effective and natural ways to deal with this problem. I had been taking prescription sleep medications [Ambien] for over 5 years. It stopped working and I simply took more. Still did not work. Nights were very difficult - medication put me to sleep but I would wake up after 2–3 hours with a strong sympathetic response (fast pulse, pounding heartbeat, wide awake alert). It was a very difficult cycle to break. I was really in bad shape due to lack of sleep.

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Answer 6

Most fish spend part of every day asleep. Being asleep can mean different things to different fish. Some fish (like herring and tuna) are motionless in the water during the night. Other fish, like rockfish and grouper, don't appear to sleep at all. They rest against rocks, bracing themselves with their fins. Also, some freshwater fish (like catfish) swim up under a log or river bank for shelter during the day. By the way, fish can't close their eyes when they sleep; they don't have eyelids.

Answer 7

I'm pretty sure that even fish need to sleep sometimes, although it must be different as they can't close their eyes. It's not so obvious with the fish in my community tank; I can honestly say I've never noticed any of them (except the algae eater) even resting. But I have seen my betta sleep. He either goes inside the castle decoration (for the darkness?) and kind of hovers, or he likes to lean on the plants or sometimes the filter box and gets very quiet. I freaked the first time he did this, because he looked almost dead, but he was fine.

Answer 8

Its sorta wierd. Apparently (due to me having an aquairium and looked it up in my book) they close down one half of their brain for a while and they wake up totally then switch sides. Some fishes do have eyelids so their eyes close when they sleep. Hope you fish days go good

Answer 9

PROBABLY.

Sleep can be defined in several ways. One way sleep is defined is as a period of rest and inactivity. Of course, because fish do not have eyelids, they can't close their eyes during rest. If your definition of sleep is a period of rest and inactivity, then "Yes, fish sleep" at least some species. It is very difficult to record brain wave patterns from fish for long periods of time, and even if you could record an electroencephalogram (EEG) the "sleeping" brain patterns in fish would probably be different from other animals because of differences in brain structure. However, many fish have rest/activity cycles that indicate "behavioral sleep." EEG recordings from the catfish have been made. These data showed differences in the brain wave patterns during waking and behavioral sleep.

...and it's best to put your tank lights on a timer so that your fish have a "lights out" period. 8 - 10 of light is enough. Consult a local pet store to determine what's best for your particular breed. Fish need "sleep" to develop properly and to experience optimal health!!

Additionally.... like many of us, fish aren't morning people. Don't turn on the tank lights abruptly. It's generally best to wait until the room is filled with ambient light before turning on the tank lights. Consider, this... how do you like it when you're asleep and someone abruptly turns on the lights? Or how do you react when you leave a dark room and bright light hits your eyes? Fish react the same way!!

Answer 10

The person above me is correct. And as everyone has pointed out the obvious that any 3rd grader should know is that fish don't have eyelids, thus they don't close their eyes. You can tell if your fish are resting (for most species at least) is they sit at the bottom of the tank and hardly move. Also for some species their colors are more dull when they are at rest. I laughed when I saw the oscar's at our store resting as two were leaning against each other (granted this was at 2AM).