Stupid Question - But I'm so Curious

mimm Banned

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#1

Hi DP friends,
It might be a stupid question for you guys. But I really want to know the right answer of it.
It makes me shy that I still don't know the answer of this elementary question.

DO YOU KNOW HOW FISH DO SLEEPING?

Thanks for the answer.

mimm, Jun 8, 2008 IP

bagwell Peon

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#2

Question: Is it true that fish do not sleep?
Tom M Dechand

Answer: 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. Write in again soon!
Tom F Ihde
Click to expand...

http://www.newton.dep.anl.gov/askasci/bio99/bio99047.htm

Q: When do fish sleep? â€”Danielle, California

[Florida Keys National Marine Sanctuary, NOAA] A male spotlight parrotfish in the Florida Keys

A: It depends on the fish. First, though, we should define sleep. Unfortunately, we donâ€™t know what sleep is. We need it, whatever it is. Fish do too. Mammals, birds, and reptiles sleep in a state characterized by profound changes in brain-wave pattern. Most fish donâ€™t show this brain-wave change when they rest. So, fish-sleep is different. However, all fish rest in a shutdown mode and recuperate like us periodically.

Some reef-dwelling parrotfish sleep at night. A fish holes up in a crevice and envelopes itself in an odor-squelching slimy cocoon. Prowling predators canâ€™t detect it. The fish snoozes so deeply that divers can hold it while it slumbers on.

Certain sharks (the Reef Whitetip, Tiger, and Great White Sharks) "sleep" during the day and hunt at night. Streamlined sharks, like hammerheads, normally keep moving to push oxygen-bearing water over their gills to breathe. Their fins are too flabby to perform this task. However, the organ (Central Pattern Generator) that coordinates swimming movements isnâ€™t in the creatureâ€™s brain but rather in its spinal chord. So these fish can swim while unconscious. Maybe they sleep.

Herring, minnows, and tuna sleep at night. Catfish, bass, and perch sleep under a log or riverbank during the day.

By the way, fish donâ€™t close their eyes when they sleep. They lack eyelids.

Further Surfing:

R. Aidan Martin, ReefQuest, Centre for Shark Research: Mystery of sharks â€˜restingâ€™ on bottom

(Answered May 23, 2003)
Click to expand...

http://www.wonderquest.com/fish-sleep.htm

// wow,. very interesting , i never thought of it how they sleep or if they do
It's good you asked, now I know a bit more also
Never be afraid asking anything, its they way we learn

bagwell, Jun 8, 2008 IP

mimm Banned

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#3

bagwell said: ↑

...wow,. very interesting , i never thought of it how they sleep or if they do
It's good you asked, now I know a bit more also
Never be afraid asking anything, its they way we learn
Click to expand...

Yes, sure. I still have some elementary questions actually.
And thank you very much for the information. I never think will find the answer this soon. Bagwell is the best!

mimm, Jun 8, 2008 IP

bagwell Peon

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#4

mimm said: ↑

Yes, sure. I still have some elementary questions actually.
And thank you very much for the information. I never think will find the answer this soon. Bagwell is the best!
Click to expand...

If you have more question just ask
I'm glad to give any help
Thanks for sweet post

bagwell, Jun 8, 2008 IP

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Stupid Question - But I'm so Curious

mimm Banned

bagwell Peon

mimm Banned

bagwell Peon

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