Re: Do fish sleep?
Posted By: Bruce Woodin, Staff Biology. Woods Hole
Date: Tue Apr 9 10:18:14 1996
Fish do have a quiescent period which can be called 'sleep'. Tropical freshwater
fish in home aquaria can be observed resting immediately after turning the
lights on in a room which has been darkened for several hours.
Because of the nature of their eye (lacking an eyelid),
they do not 'close' their eyes when they are sleeping.
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