How to care for a goldfish in a round aquarium?

Small round aquariums look beautiful in any interior, they are easy to clean and move. In such containers, novice aquarists often start small unpretentious fish: guppies, cockerels, mollies, and pecilia. But the most popular option is a round vessel in which a goldfish swims.

The predecessors of the goldfish or Chinese crucian carp were domesticated by the inhabitants of China in the 7th century AD. This fish originated from ordinary silver crucian carp. Since the 13th century, fish have gradually become an adornment not only of the luxurious houses of the rich, but also of the dwellings of ordinary Chinese.

The goldfish has a short, high, angular body, which is slightly flattened from the sides and has a coating of dense and rough scales. Length reaches 30 cm, weight no more than 350 g. Fish of the original form are silver in color. As a result of the selection, the goldfish acquired a variety of colors, which, depending on the breed, varies from yellow-metal and orange to black.

Nowadays, there are dozens of varieties of breeds of goldfish, but most often in aquariums you can find common goldfish, veiltail, pearl, lion head, telescope.

In order to choose a healthy goldfish that can live in a round aquarium for as long as possible, Before buying, pay attention to the following symptoms:

• healthy fish actively swim and eagerly rush to feed;
• do not buy goldfish with damage to the eyes and fins;
• rashes and cloudy deposits on the scales are signs of exhaustion;
• when the fish is healthy, its dorsal fin is raised, in sick individuals it is pressed to the back;
• males and females of this fish can be distinguished from each other only in the mating season;
• short-bodied goldfish with good care live about 15 years, and having a long body - 20-35 years.

Among aquarists, goldfish are considered hardy and unpretentious aquatic inhabitants, which are easy to care for. Despite this, even keeping one fish in a round aquarium requires knowledge of some basic aspects.

• The volume of the aquarium. These fish require a fairly large amount of water. A standard round aquarium holds 30 liters. Therefore, in such a container, you can contain only one goldfish or its species with a short body (veil tails, rukins, telescopes).
• Compressor. This type of aquarium fish needs a large amount of oxygen, and a round aquarium does not have enough area for proper aeration, so you should buy a powerful compressor marked "for round aquariums". Water inhabitants cannot live without oxygen. In a round aquarium without a compressor, a goldfish will live very little.
• Filter. The peculiarity of gold fish is that they actively dig soil at the bottom and stir up mud. Therefore, experts recommend buying a good filter. If you want to keep a round aquarium without a filter, then be prepared for daily maintenance and frequent replacement of troubled water. But it’s easier to buy an aquarium with a lid, which contains all the necessary equipment.
• Water composition. The first time the water for the aquarium must be defended for a day, boil, cool to room temperature, and then pour into a container. A comfortable temperature for a goldfish is + 15 ... 20 degrees Celsius. The acidity should be 6.5 -8.0 pH, and the degree of nitrates should not exceed 20. The water should not contain ammonia. Once a week, 1/5 of the water should be changed even with a good filter.
• Lighting. Install the aquarium in a well-lit area, or use the backlight. From a lack of light, the fish loses its color and may die. Lighting is also required for algae for photosynthesis.
• Soil and plants. It is necessary to purchase coarse soil or gravel - the fish will dig and contaminate the shallow soil. At the bottom you can place a small shell or a ship figure without sharp corners. For a beautiful shade of the bottom, special colored primer is now available for sale. The presence of plants in a round aquarium with a goldfish is required. Recommended for planting Elodea, cryptocoryne, Wallisneria, hornwort, pistia.
• Feed. Goldfish can be fed 2 times a day in small portions of live food (bloodworms, daphnia, artemia) in combination with vegetable or special balanced nutrition for this type of fish. Remember - this is the case when underfeeding is better than overfeeding.

For more information on the content of goldfish, see the next video.