do fish sleep?????

Question

and why when i turn the light out they all swarm over to one side of the tank???

Answer 1

Fish do not sleep in the same way we sleep. It's much more like just dozing around would be for you or me.

MM

Answer 2

All fish spend time in an energy-saving state that can be called "rest", and we might even call their behavior "sleep", though it is probably different than "sleep" in most land animals. Many fish, like Bass and perch, rest on or under logs at night. Coral reef fish active in the day, hide and rest in crevices and cracks in the reef to avoid being eaten at night. The resting behavior of fish is very different from their behavior the rest of the day. Many minnows, for example, which are very active in schools during the day, scatter and remain motionless in shallow water at night. Many fish "rest" or "sleep" during the day and are active at night instead, but almost all fish sleep. There are some animals that never stop swimming, like many species of shark, however, they HAVE to keep moving to push water through their mouths in order to breathe, and they may still sleep while moving. Some fish, like sharks have the ability to shut down one side or another of their bodies.
For more info:
http://www.national-aquarium.co.uk/datab...

Chances are when you turn the light on, it comes on quickly and they feel safe in a certain corner of the tank.

Answer 3

Most all fish spend time in an energy-saving state that can be called
"rest", and we might even call their behavior "sleep", though it is probably
different than "sleep" in most land
animals. Many fish, like Bass and perch, rest on or under logs at
night. Coral reef fish active in the day, hide and rest in crevices
and cracks in the reef to avoid being eaten at night.
The resting behavior of fish is very different from their behavior the
rest of the day. Many minnows, for example, which are very active in
schools during the day, scatter and remain motionless in shallow
water at night. Many fish "rest" or "sleep" during the day and are
active at night instead, but almost all fish sleep.
There are some animals that never stop swimming, like many species of
shark, however, they HAVE to keep moving to push water through their mouths
in order to breathe, and they may still sleep while moving,
we just don't know yet.

Answer 4

Yes, they sleep...or at least they "rest." If you turn your tank lights back on in the middle of the night when it is completely dark in the room, you will probably see your fish resting near the bottom of the tank, with their colors faded. Once the light is on for a while they will "color up" and become active again.

Answer 5

I know sharks get drunk, dolphins sleep by shutting down half of their brain at a time(I know a few people who are awake and do that) and the reason they go over to one side of the tank is because they are all talking about you.

Answer 6

Sort of they don't completely shut down just some of their system, they need rest for at least 7 hours a day.

i get up in the mornings and find my guppies resting on the bottom but quickly swim up to be Fed.

Answer 7

Fish half sleep. They have to be constantly moving in order to breath. So they "half sleep". Take sharks for example when they need to they will be moving but "not all there". Do you understand what I'm trying to say.

Answer 8

alot of fish sleep on the bottom like live bearers. when i turn the light on in the morning almost all of them are laying on the bottom upright and it takes them a while to get going

Answer 9

Yes

Answer 10

Yes, most varieties of fish do sleep.