2006-09-03 02:05:31 · 38 answers · asked by Richard H 3 in Pets ➔ Fish
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. Unfortunately, fish have no eyelids so it is difficult to tell whether they are asleep or not.
2006-09-03 02:19:55 · answer #1 · answered by gooner1972 3 · 21⤊ 2⤋
yes apart from some sharks, dolphins and whales - they have be awake constantly otherwise they drown - however all other fish do sleep (they don't close their eyes and jump into a bed) , but they will hide or (for goldfish) stop swimming and kinda bob across the rocks. Hope that answers your question.
2006-09-03 06:30:43 · answer #2 · answered by PeachyPies 3 · 0⤊ 0⤋
yes they do when a fish goes behind something like a rock and lay down they are probably scared or sleep one of my fish is sleep right now
2006-09-03 04:39:51 · answer #3 · answered by C live 5 · 0⤊ 0⤋
Depends on the fish, and on your definition of sleep! Nearly all of them settle and rest/shut down for a period of time, which most people consider sleeping, but with no eyelids (by one definition) they technically can't sleep.
2006-09-03 07:12:08 · answer #4 · answered by Al 2 · 0⤊ 0⤋
Mine do, except for the 2 australian black tip sharks I have. They just keep on swimming around and around. The fish sort of lay on the bottom of the aquarium or hide in the rocks and uh, sleep, I suppose.
2006-09-03 02:27:09 · answer #5 · answered by Jazz 2 · 0⤊ 0⤋
They don't all sleep with their eyes closed but they zone out for a few minutes at a time waking up many times to stay safe from predators.
2014-04-20 17:44:30 · answer #6 · answered by Mitchell 1 · 0⤊ 0⤋
They do sleep but in a different way than humans.
2014-06-03 03:02:44 · answer #7 · answered by Kevin7 7 · 0⤊ 0⤋
Yes they do with their eyes wide open and side fins moving to keep them stable in the water. One way to spot when they are sleeping is when they keep very still in the water usually hiding behind shelter if any...
2006-09-03 03:36:06 · answer #8 · answered by Michael W 3 · 0⤊ 0⤋
yes! i have two fishes who loves to sleep.
2006-09-03 06:41:16 · answer #9 · answered by snchim 1 · 0⤊ 0⤋
fish rest, they dont move so you could call it sleep because its not like other daily activity.
2006-09-03 03:31:30 · answer #10 · answered by Amie S 1 · 0⤊ 0⤋