why dont fish sleep?

Question

because I stayed up all night and they didn't now I need a nap!

Answer 1

because maybe they are just not tiered? HELLO????

Answer 2

It all depends on what you mean by sleep. My dictionary says that sleep is a period of rest in which the eyes are closed and there is little or no thought or movement. That is, sleeping means closing your eyes and resting. The first thing we notice is that most fish don't have eyelids (except for sharks). Also, while some deep ocean fish never stop moving a great many fishes live nearly motionless lives and many do so on a regular diurnal/noctural cycle, some active by day others by night.. So we can't generalize and say that all fish sleep like we do. But most fish do rest. Usually they just blank their minds and do what we might call daydreaming. Some float in place, some wedge themselves into a spot in the mud or the coral, some even build themselves a nest. They will still be alert for danger, but they will also be "sleeping."

Answer 3

They do sleep, but you've probably noticed that fish don't blink (because they have no eyelids!) so you can't tell right off if they're sleeping. All mammals and animals have instincts. They're always cautious and aware of everything going on around them. So fish don't take one, long, sleep like we do. They take quick naps whenever they're tired. They don't have eyelids because half of their brain is focused on resting and the other half is watching for predators. So if they see anything that might eat or harm them, they can wake up and be ever vigilant. Also, with snakes, it's the same thing.

Answer 4

They don't sleep because many fish need to keep water running over their gills so they don't suffocate. Also, if you go to sleep in a river, when you wake up, you might be in a very dangerous position (like over a waterfall...). Sleeping is not advantageous for fish, so they just take quick rests instead (as they rest, they are aware of their surroundings and alert for danger).

Nosoop4u

Answer 5

Fish do sleep. Sharks have to constantly swim to keep their gills alive. They sleep while they are swimming. Do some research. Some sharks actually lay on the bottom. Regular fish like Angels..groupers..or even the goldfish...find a spot and grab some zzzzzz"s. They do sleep.

Answer 6

Fishes don't have the same degree of neocortical development as mammals. If, however, you define sleep as a combination of a reduced metabolic rate, slowed physical activity, lowered response to stimuli and the assumption of a resting posture, then many fishes do sleep.

They just don't get rest in the known and accepted way we've learned.

Answer 7

fish do sleep when they are floating at the bottom of your tank and are not moving but gills are slightly moving or floating and giving alittle fin kick every once in awhile. .make sure before you run to get the net and show him a twister of watery fun goodbye that they are not just chillin for amoment. the lack of eye lids sends too many pets to the flusher. if you are really concerned feed them alittle .that should perk them up.

Answer 8

Every animal sleeps. They just need different amounts and do it in different ways. (Fish slow down and sometimes sit on the bottom. They can't close their eyes, so it doesn't look like they're sleeping.)

Answer 9

Becuase they don't move much or use much brain power so they don't sllep very often and when they do the just snooze for a few seconds and then go on about there bussiness swimming around, eating pooh, swimming around, running into the glass, eating pooh, etc.

Answer 10

howdy you realize it does not look like they're snoozing yet especially situations they're. inspite of theyre eyes open they constantly could be in action or they're going to sink to the backside. So technically they're swimming collectively as they're snoozing and fish have not got eye lids.

Answer 11

I had a fish. I read they actually have no eyelids, so they sleep still with their eyes always open.