How do I know if my fish is sleeping?

It's pretty easy to tell when fish are sleeping: they lie motionless, often at the bottom or near the surface of the water. They are slow to respond to things going on around them, or may not respond at all (see some sleeping catfish here). If you watch their gills, you'll notice they're breathing very slowly.
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How do you tell if a fish is asleep or dead?

The best way to tell, if a fish is sleeping or dead is its gills' movement. If it is sleeping then the slow movement of gills will be noticeable. For a dead fish, the respiration process is impossible. Sleeping fish will be motionless but become active again.
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How long does a fish sleep?

Sleeping Duration

And they prefer to rest in the night hours. They require an average of 8-12 hours of sleep every day to keep their functions active. Some species are nocturnal and mostly become active at night.
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Do fish sit still when they sleep?

While fish do not sleep in the same way that land mammals sleep, most fish do rest. Research shows that fish may reduce their activity and metabolism while remaining alert to danger. Some fish float in place, some wedge themselves into a secure spot in the mud or coral, and some even locate a suitable nest.
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How do fishes sleep in aquarium?

In principle, all fish that live in home aquariums tend to lie motionless on the bottom or near the surface of the water and to sleep during the day. You should never disturb them while they sleep, as you may frighten them and cause them severe stress.
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How to tell if goldfish is sleeping or dead?



Should fish sleep in the dark?

Fish don't necessarily need complete darkness to sleep, but it's best to provide them with the amount of darkness they would have in their natural environment. They may sleep when tired if the lights are on, but it will be better for their sleep and overall health if they can rest in darkness.
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Can fish sleep with light on?

The short answer is No – you SHOULD NOT leave the aquarium light on overnight. Fish require both light and darkness to survive. Like most other animals, fish need darkness to rest. The fact that they lack eyelids makes them require a sufficiently dark environment for them to get in any kind of sleep or rest.
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Do fish rest at bottom of tank?

It's perfectly normal for fish to rest and sleep while lying at the bottom of the tank. Healthy fish will do this between sessions of active and energetic sessions of swimming. You should keep the lights on your aquarium on a diurnal schedule (8-10 hours of light per day) to encourage your pet fish to rest.
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What do fish do all day in a tank?

Fish that are active during the daytime usually begin by feeding. That might involve scavenging around the tank bottom for scraps of food, eating whatever flakes or pellets you scatter on the water surface, or grazing on the colonies of algae that grow on tank surfaces.
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Why do fish stay still?

One common cause is improper water temperature. If your fish's water is too hot or too cold, they will be very inactive. Check your heater and verify that your aquarium is at the right level. Other possible causes are overfeeding and improper water quality.
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Do fish sleep upside down?

Sleeping fish remain stationary but upright; they do not turn sideways or upside down. A fish that is leaning, is upside down, or lying on the bottom isn't sleeping but is likely sick.
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Do fishes cry?

"Since fishes lack the parts of the brain that set us apart from the fishes — the cerebral cortex — I doubt very much that fishes engage in anything like crying," Webster told LiveScience. "And certainly they produce no tears, since their eyes are constantly bathed in a watery medium."
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Why is my fish not moving but still alive?

The impaired buoyancy in fish is caused by a malfunction of their swim bladder. When affected by Swim Bladder Disorder fish will often lose the ability to properly swim. They will float uncontrollably to the top of the aquarium, turned upside down, while still being alive.
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Why is my fish barely moving?

If fish are experiencing acute stress (i.e., gasping up at the surface, lying on the bottom and not moving, or darting around the aquarium), you can be pretty sure that the water has been poisoned in some way. Maybe cleaning sprays got into the aquarium, or something released toxins into the water.
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Is my fish dead or hibernating?

Are the fish dead, or are they hibernating? Luckily, most likely the fish are not dead, but they are cold. Fish are cold blooded which means their body temperature is regulated by their environment. This means when water temperature decreases so does the body temperature of the fish.
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What do fish like to play with?

Floating log, leaf hammock, moss balls, and aquatic plants are some of the best things for aquarium fish to play on. Enhancing your tank with toys and marine décor can do wonders for your fish's habitat. It excites them and makes them feel at home.
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Do fish get bored in a tank?

Fish-keepers sometimes see their pets 'glass surfing' – swimming repeatedly up and down the glass of the tank. This could be the aquatic equivalent of the pacing of a captive tiger that's bored from a lack of stimulation. But the fish could also be stressed from an overcrowded or unfamiliar tank.
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How do I keep my fish entertained?

To stimulate your fish's brain, give it toys like floating rocks and caves for it to hide in. You can even train your fish to do tricks like swim through a hoop or jump out of the water with a little practice. Keeping your fish healthy and active will help you enjoy your fish for longer.
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Why does my fish stay in one corner?

Just like sickness, they stay in the corner because they feel vulnerable. Unfortunately, there's not much you can do for this one except wait for it to pass. Lastly, they may be doing it because there aren't enough hiding places in the tank—all fish like lots of hiding places where they can feel safe and rest.
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What are the signs of fish dying?

Sick fish
  • Loss of appetite.
  • Weakness or listlessness.
  • Loss of balance or buoyancy control, floating upside down, or 'sitting' on the tank floor (most fish are normally only slightly negatively-buoyant and it takes little effort to maintain position in the water column)
  • Erratic/spiral swimming or shimmying.
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Why is my fish hiding behind the filter?

Currents – Very small fish may be uncomfortable in strong currents from a new filter, oxygenator or bubbler, and may start hiding to keep away from the unnerving water movements. Adjusting the currents can help these fish feel more comfortable so they can explore the whole tank again.
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Do fish like LED lights?

Fish are not as reliant on light as plants. In general, aquarium owners can use incandescent, fluorescent, or LED lights for fish but should be aware of the heat issues that incandescent lights cause.
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Are fish Afraid of the dark?

Fish don't like the dark because when there is no light to see, they dart around the tank, colliding with the walls, ornaments and can even become tangled in the plants. Fish need light to determine whether it is night or day, and they're scared of the sudden switch from darkness to light.
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Should I turn off the bubbles in my fish tank at night?

Generally, fish should be able to sleep without being bothered by bubbles or water agitation created by air pumps. Besides, if you want, you can turn off your air pump at night, but make sure the filter continues to run, so it fulfills the required aeration in the aquarium.
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Do fish like light in their tank?

While fish do need light, which can be sunlight, fish in your aquarium do not need direct sunlight. Placing your aquarium in direct sunlight is something you want to avoid for good reasons. Direct sunlight is so strong and contains a lot of energy, which will be harnessed by algae to grow like crazy.
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