Do goldfish sleep at the bottom of the tank?

Do goldfish sleep at the bottom of the tank?

Goldfish are hardy fish that can survive in water conditions that kill many other fish. They can live in algae-filled water and muddy conditions, but they need space to swim. Depending on the species, goldfish could grow between 6 inches and 18 inches.

In addition to the fact that they do not allow much space for swimming, bowls are incompatible with goldfish: the limited space allows easy development of nitrates, poisoning the fish. Even when a small space is occupied, it causes nitrates to build up easily, poisoning the fish. However, whether inhabiting a bowl or a tank, in most cases hanging a goldfish at the bottom of the bowl is unusually behaving.

Sometimes, when a goldfish is nervous, it will simply stay in the water and not be able to move. This condition is often obvious as the fish hang a lot at the bottom of the tank. Poor water quality, lack of oxygen, poor nutrition, and loud noises are factors that can cause this. The goldfish are not only vulnerable to their own aquatic environment, but also to the ecosystem outside of their own. While it is true that goldfish can tolerate algae and dirt to a certain extent, if their water gets too cold, they sometimes go into hibernation. While it is doubtful that such conditions occur in a tank by sitting still on the bottom, the fish might react.

Sleeping Oranda Goldfish


The fish are depressed and get sick from nitrates in the water; nitrates build up quickly in a small tank and cause diseases. Sleeping is the only safe condition for goldfish that hang on the bottom of a tank. They just hang out somewhere while goldfish sleep without moving much. The fish can still look awake, as goldfish do not have eyelids. The goldfish sleep at the bottom of the tank, but they sleep anywhere in the tank as much as they do not. Where the sleeping fish get tired is where they rest.

Goldfish (Carssius auratus)

This genus includes two species, the Golden and silver carp. The silver carp proved to be rich in various variants of their offspring-ancestors and gave fishkeepers and breeders many varieties of Goldfish.

The first information about the cultivation of goldfish in artificial pools in China dates back to the IV – V centuries. But the ancestors of modern races were bred much later-in the X-XII century.

How Goldfish sleep

For a long time, breeding work was carried out in Korea, China, and Japan to breed numerous goldfish breeds. Silver carp served as material for the breeding of the original forms. Decorative fish lost their ancestral mobility, the body became short and wide, the size and position of the eyes changed. There were breeds with different growths on the head. The color scheme of these fish is very different: black, red, golden yellow, and even with transparent scales.

The most famous types of goldfish are Veiltail, telescope, comet, oranda, Celestial Eye, lion head, Pearlscale, and others are fishing. In recent years, a” Little Red Riding Hood ” has appeared, which forms a growth on the head after a year of life – just like a Little Red Riding Hood.

Conditions for keeping all goldfish breeds are almost the same. They eat any living food-mosquito larvae, earthworms kept in the washed sand for several days, scraped meat in the form of balls the size of peas, buckwheat, oatmeal and even bread. A few minutes after feeding these products, the food residue should be removed if the thoracic does not pick up all from below.

The sexual maturity of Goldfish occurs in the second year of life. The fertility of the fish is high, the female spawns more than 3000 eggs. Short – bodied breeds of this species in acceptable conditions live up to 15, long-bodied-up to 35 years. Sometimes goldfish sleep at the bottom of the tank so don’t be scared in you notice it.


A few goldfish are placed in a spawning area with a capacity of 50-80 liters with freshwater, a grid with large cells, through which the fish, however, can not eat eggs from the ground. The water level is 15 cm. A glass container is installed closer to the window in the evening and gives a good air spray.

Usually fish start spawning in the morning – the male chases the female and knocks out the eggs. As a rule, the female lays many eggs – depending on the type of Goldfish several thousand pieces. Caviar translucent, reminiscent of Seluang fish caviar, sticky, difficult to shoot.

After caviar is produced the pair is removed, spawning water is poured out, the volume of the freshly deposited water rinsed and a new part of the boiled water is poured at a temperature of 24-25°C, to Mature the eggs. The water level should not exceed the previous one in which the Breeders spawn. Install an air sprayer and a mechanical filter.

Larvae hatch on the fourth or fifth day. And after two or three days, the fry begins to swim. From this time on, fry must be fed abundantly with “dust”, later-with artemia or small crustaceans commonly called Water flea. Food should be kept in a large aquarium at all times.

It often happens that there are many small living foods in natural reservoirs, while the producers do not give caviar. Conversely, at the time when spawning finally took place, a small Cyclops disappeared in the reservoir and it was not possible to feed a large number of Goldfish fry. Therefore, in order for spawning to take place at a certain time, the method of hormonal stimulation is used. As a stimulant, you can use the pituitary gland of cyprinids.

After injection, the fish can spawn in a capacity of at least 200 liters, with water rinsed with air for natural spawning on a substrate of green nylon threads. If you notice that it is at the bottom it can be that goldfish sleep at the bottom of the tank, don’t worry.

On request, spawning of goldfish can be carried out artificially. 30 hours after the injection, the caviar is filtered out on a 150x100 mm glass, which is boiled for an hour and presses the belly of the female with the fingers in the direction from the fish head to the exit hole. The male milk is also filtered out on the eggs and mixed with a squirrel brush and evenly distributed over the entire surface of the glass. After 40 seconds, the glass is turned over with caviar and the contents are placed in a ditch with water. This should be done very quickly so that the caviar does not have time to slip off the glass. Two minutes later, a stream of water is passed through the cuvette from the aquarium above the cuvette. The initial current rate is two liters per minute. Then, when the water level in the aquarium decreases, the flow rate becomes weaker. This depends on the height of the aquarium installed with water. This type of washing caviar is optimal, it ensures good fertilization and prevents the development of a fungus – Saprolegnia.

After the washed caviar remains at the bottom of the cuvette, it is necessary to drain most of the water and pour the rest into the incubator together with the caviar. Here the caviar will develop within seven days. It should be noted that mechanical friction of water against the walls of the incubator prevents the deposition of pathogenic bacteria and fungi on the eggs. With this method, the yield of roasts is almost 95% of the total amount of caviar.

Aquarium for goldfish

This is a species aquarium for goldfish, the variety of breeds of this species allows you to create a fantastic underwater world.

The conditions for the keeping of goldfish differ from the traditional majority of the aquariums options, the volumes exceed several times for the successful development of this art. Though the goldfish is, of course, unpretentious, he needs a good oxygen regime with a large water surface with a mechanical filter and systematic water exchange.

Normally, a 100-liter aquarium is enough to hold 8-10 fish. The bottom of the aquarium is lined with gravel and coarse sand, also you should place flower pots with plants (at the sharp square corners of decorative plastic pots fish are usually injured): Arrowheads, Vallisneria and Nuphar. It is not necessary to plant plants in the soil, as these fish dig sand or soil and damage the roots. Floating plants such as cauliflower, duckweed, or riccia are placed on the water surface.

This aquarium must be supplemented by two catfish -thoracata (male and female). The community of these species is very useful – catfish clean the bottom of the aquarium from the waste products of Goldfish. Water with your help is always much cleaner and more transparent.

The optimum temperature of the contents is 20°C, the chemical composition (hardness, acidity) does not play a major role. You can feed any living food. You can give compound feed, especially before spawning. Fish are very sensitive to sudden changes in the water (an incentive to spawn). Hope you found out the answer to the question do goldfish sleep at the bottom of the tank and much more information.