Fish do not sleep or blink in what we would consider a normal manner.
They do however rest, which can be equated to a form of sleeping. Many fish including reef fish will retire to caves or under rocks or coral to rest at night, and to avoid being eaten. They stay still, do not feed, or swarm.
Others like some sharks never stop swimming, as it is necessary to have water continously pushed through their gills to allow them to breathe. It is often felt that they "sleep" or enter a stasis period where they are still moving, but are in fact in a rest period or faux sleep.
2007-01-16 04:18:40
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answer #1
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answered by Kathleen N 1
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Well, they don't blink, because they don't have eyelids.
They don't really sleep, either, but they do have periods of rest. Diurnal fish will settle into a crevace, near the bottom, or even just in the open water to rest for the night. Some really zonk out and others remain semi-aware (they need to, in case of predators).
With nocturnal fish, it is the opposite. During the day, they rest in a dark place like a cave, and at night they come out and are active.
2007-01-16 12:14:14
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answer #2
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answered by Zoe 6
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Blinky the 3 eyed fish from The Simpsons blinked, he could even blink one eye idependently from the other two eyes! that's pretty impressive.
2007-01-16 12:18:36
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answer #3
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answered by Begbie 4
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only the irish lesser spotted blinking and sleeping fish
2007-01-16 14:47:51
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answer #4
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answered by david shan 2
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I don't know about blinking, but they do sleep.
2007-01-16 12:13:18
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answer #5
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answered by kathy059 6
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no fish cannot blink because they have no eyelids and yes they do sleep with there eyes open.
2007-01-16 12:48:10
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answer #6
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answered by the don 2
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They don't blink, but they do sleep. They don't have eyelids so they need it dark in order to sleep.
2007-01-16 12:34:39
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answer #7
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answered by fish guy 5
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they sleep but they dont blink
2007-01-16 13:07:36
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answer #8
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answered by Anonymous
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my plec (bottom feeder) blinks, but this is not common for the majority of species.
As far as i know fish don't sleep but they do slow there body rate down at night.
2007-01-16 12:15:42
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answer #9
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answered by thegenius 3
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This must be a Leeds thing!
I live in Leeds and have never seen a fish Sleep or blink!
I think if fish sleep they die!
2007-01-16 12:14:15
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answer #10
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answered by Nigi-magic 3
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