If ants sleep, why can't goldfish? It might have never passed through the minds of ordinary folks the fact that fish can sleep. Yes, even our small swimming buddies doze off once in a while, but it is definitely not the same as tucking yourself under the covers and having a good night's sleep.
Scientists have done some research that verifies the fact that some animals do not sleep. The mayfly, for example, is known to live for only a number of hours after birth. Hence, these insects only spend a considerable amount of time flying around before they die. They do so without rest so as to maximize their lifespan. A lifespan of a goldfish can be as long as ten years with the possibility of this number doubling. The lifespan also depends on whether or not the fish is actually well-fed by its owners. Because of their long existence, goldfish do get tired and need to take a break once in a while.
In answering the question "" we need to consider the way their methods differentiate from other organisms. Like the majority of animals on this planet, they basically take one spot while sleeping. They do not float around the way people always see them do, although there is the occasional hovering which is caused by buoyancy. At times they would even hide behind large aquarium decorations.
The difference, however, lies in their concept of sleep, which is actually a form of resting. They sleep with their eyes open-as they do not have any eyelids-and only undergo a trance-like state. Because of this, they are basically aware of what is going on around them. When another fish nudges them or when a certain light is turned on, sleeping goldfish would quickly swim away as if they were not sleeping in the first place. Their brain is also very small in size, and it is said that animals having this physical characteristic do not actually enjoy sleep since they lack the necessary termination of brain activity. This is why it is known that goldfish only sleep a few hours a day. Since goldfish exhibit certain awareness during their state of sleep, they retain the ability to move their fins to stay afloat and to maintain their position. They also do this to satisfy the needs of their gills to have sufficient oxygen as they move.
The next someone asks you the question "" always say yes, but be prepared to explain that their methods are far different from ours. They need sleep just like us human beings. They can also experience fatigue or get tired if they do no rest. Like us, they also sleep better with the lights off, so if you are one of the numerous goldfish owners who care about their pets, make it a point to dim the lights whenever you see them floating on one specific spot. If you do, goldfish sleep patterns will not be disturbed. Remember that since they do not have eyelids, they are also prone to distraction brought about by brightness.
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