Do fish sleep?
Most fish spend time in an energy-saving state that can be called 'rest'. We may call their behavior 'sleep'.
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Older Answers
Many fish rest on or under logs at night. This is only a state of rest, but is similar to sleep.
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Many fish rest or sleep during the day and are active at night! Anymore questions for ChaCha?
Answered by Amanda L. -
It is a controversial subject. Some fish keep very still, experiencing a quiet period. Scuba divers often handle reef fish in the middle of the night without startling them and can even lift some species out of the water before they awaken.
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Some fish and amphibians reduce their awareness but do not ever become unconscious like the higher vertebrates do. They aren't quite asleep but they don't seem to be fully awake either. ChaCha!
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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.
Answered by Lisa S. -
Yes, fish sleep, but it's not sleep as we know it. They don't have eyelids to close, and they sometimes sleep during the day. -- Cha cha!
Answered by Jamie W. -
Fish will rest, and decrease their activity, but may never go unconscious!
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About Sleep
Sleep is necessary for mammals and many other animals, in order to rejuvenate their bodies. During sleep consciousness is lost or reduced and we are less responsive to external activities. Most people need at least 8 hours of sleep per day in order to function at their highest level. Not getting enough sleep can increase the risks of cancer, heart disease, obesity and diabetes.
About Fish
Fish are cold-blooded aquatic vertebrates. Fish are also one of the most commonly consumed foods in the world. They are an excellent source of protein, low in fat, and one of the best sources for omega-3 fatty acids. Omega-3s have been shown to have vascular benefits, mental health benefits and even improve eye-site. Fish and seafood come in a wide variety of shapes, sizes, colors and flavors. Fish can be prepared any way imaginable - eaten raw, cooked with citric acid, broiled, baked, smoked, fried, cooked on a spit, boiled, in a soup, in a taco, by itself, with rice, with noodles, on a kabob... No matter how you do it, fish is delicious.
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