How do fish sleep?? (Just curious)?

Question

When and how do fish sleep???

Answer 1

Sleep means different things to different forms of animal life, however, sleep is defined as "a period of rest during which volition and consciousness are in partial or complete abeyance and the bodily functions partially suspended; a behavioral state marked by characteristic immobile posture and diminished, but readily reversible sensitivity to external stimuli." Most animals have some daily pattern of rest and activity and, in many species, these daily cycles are similar to people running around during the day then lying down at night and doing nothing or sleeping. It is believed that fish are no different, although it is a controversial subject. Some fish keep very still, experiencing a quiet period (quiescence) that you might call sleep. 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." Tropical freshwater fish in home aquaria appear to be resting immediately after turning the lights on in a room that has been darkened for several hours. So, if you define "sleep" in this term, diurnal fish (fish who are active during the day) sleep at night and nocturnal fish (fish who are active at night) sleep during the day. Unfortunately, fish have no eyelids, so absent this obviously slowed movement or reaction time, it is difficult to tell whether they are asleep or not.

Answer 2

i continually questioned an identical ingredient.. maximum animals have some each and every day development of relax and interest, and in many species those each and every day cycles are equivalent to human beings working around for the time of the day then mendacity down at evening and doing no longer something or drowsing. that's believed that fish are not any diverse, despite the fact that that's a debatable project. some fish save very nevertheless, experiencing a quiet era (quiescence) which you ought to call sleep. Scuba divers usually guard reef fish in the path of the evening devoid of startling them and may even bring up some species out of the water in the past they awaken. Tropical freshwater fish in domicile aquaria seem to be resting on the instant after turning the lighting fixtures on in a room that has been darkened for quite a few hours. regrettably, fish have not have been given any eyelids so that's confusing to tell no count if or no longer they are asleep or no longer.

Answer 3

Hi,
Fish need sleep like any other animal when light goes out they do to but sleep swimming its called

Answer 4

As to when it's usually after dark... as to how that's a big question but it's not like we sleep at all. They are only about 1/2 asleep and wake up very quickly if any thing moves near them.

MM

Answer 5

they sleep with thier eyes open..my fish just float around at night and then if there is movement in the tank or if they see a human then they begin to swim with more speed.

Answer 6

Well mine sleep when I turn the light out and then when I turn them on they r all like just sitting there kinda floating at the top of the water then after awhile of the light being on they come out of their sleeping trance and wake up just like ppl.Kinda weird to see them asleep..they look dead but they arent..

Answer 7

They sleep-swim as opposed to sleep -walking like humans.

Answer 8

In a sea bed!