Two Goldfish swimming side by side

Do Goldfish Sleep?

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If you have never had fish before now, there may be a whole host of things you don’t know about them. Goldfish make low maintenance pets, which means that they are perfect if you lead a busy life. Still, it is crucial that you take an interest in your fish and what they do. One of the things that many fish owners wonder is whether their goldfish sleeps or not. Well, luckily, we are here to provide you with all the answers you need.

Do Goldfish Sleep?

The simple answer is yes. Like most animals, goldfish need to rest so that they can be healthy and happy. Despite this fact, the way in which they sleep is quite different than you might expect. Their form of sleeping is more like our ‘resting’ state. When goldfish go into this state, they stop swimming around their environment. You will notice that your fish becomes quite still for an extended period. During this time, they will move a little so that they can keep upright in the water. Much of the time, your fish will sleep at the bottom of their bowl or aquarium. When your fish is asleep, you will notice that its color becomes duller than it once was. When you see this change in tone, you will be sure that your fish is sleeping or resting.

Do Fish Sleep At Night & For How Long?

Goldfish can sleep for hours and hours at a time. If you want to create the right environment for your fish, you should ensure that they have a period of dark. That is to say that you need to turn the lights out in the room where you keep your fish. In the same way that we sleep better in the dark, your goldfish is more comfortable when there is little to no light. You need to make sure that your fish can get enough rest so that it remains healthy. So yes fish do sleep at night if there is darkness in the environment.

Why Don’t They Close Their Eyes?

Many people wonder why fish never close their eyes when they are sleeping. Well, the answer is pretty straightforward. Goldfish can’t close their eyes because they don’t have any eyelids. That means that it may look as though your fish is wide awake when, in reality, it is resting. Instead of looking for closed eyes, you should look to see the color of the fish and where it is in the tank. That way, you will know what is happening to your fish.

What Is Swim Bladder Disorder?

Many owners confuse swim bladder disease with sleeping. The swim bladder is an organ that fills with gas. When the organ is full, it helps the fish to float without any issues. Sometimes, though, fish can get swim bladder disease. This problem is common in aquarium fish, and so you should be aware of it. When your fish has this issue, it will float upside down. The fish may float at the top or the bottom of the tank. When you notice this issue, you may need to seek professional advice as soon as possible. It can also be prevented or treated with a simple water supplement. People often ask if Goldfish sleep on their side, afraid not this is more likely to be swim bladder disease.


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