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To settle on the aquarium

It should be remembered that on the proper selection of fish depend for their future livelihoods and development. In aquariums, the pet shop exotic fish swim. Here and bright blue or crimson cocks, large Crescent angelfish, handsome shiny neons, minors, goldfish and their varieties: veiltail, telescopes and many other showy fish. The combination of various shapes, a range of colors — all this is striking in its beauty and impressive picture. And quite understandable is the desire to acquire the most vibrant and spectacular fish. Fish are living beings with their own habits, needs, tastes, temper, which you should know and consider. For example, goldfish. It is unpretentious, not afraid of temperature fluctuations and not choosy with food. But the mahseer of sumatranus, Vice versa, capricious, effeminate and therefore requires a relentless worries.

Or take game fish. She is very afraid of cold, significant reduction of water temperature may be detrimental. Of course, for all tastes will please. However, choosing fish for the aquarium, it is necessary to consider their features. It is recommended to adhere to the following mandatory conditions of settlement of the aquarium. If its volume is small (about 10 litres), more than three fish in it to contain impossible, as the norm is three liters of water per fish length of five or six cm But will grow more.

Than rupnieciba, the more living space it needs. Therefore, we recommend to buy (or produce) the aquarium at least 30-40 litres of water, which will contain 10-15 fish. To give the fish in the aquarium must also thoughtfully. Combine the fish can only be equal in size, behavior and environmental conditions. Cold-water fish cannot be placed together with warm-water, predatory peace and the Oversight etc. when moving may cause the death of fish. Continue reading

Aquarium fish living in the upper layers of wate

Aquarium fish — ornamental fish. which are contained in the aquariums. Aquarium fish originate from China. The Chinese began to breed aquarium fish since 2000 BC.

The content

The family of aquarium fish

To aquarium fish are fish of the following families:

Dwelling in natural conditions

The majority of aquarium fish in natural conditions live in tropical and subtropical freshwater reservoirs, so when artificial content of some of the fish needed the sea water, relatively high water temperature is roughly equivalent to room temperature of the aquarium.

The aquarium and aquarium equipment

The preferred fish for an aquarium is rectangular in shape, round is valid if the volume of the aquarium is 200 L. the Form is important to adequately represent the fish about space. The content of fish in the aquarium-the glass often leads to death, not because of lack of water and due to nervous disease, caused by the shape of the aquarium [ citation 787 days ] . Continue reading

Sea secrets

12. What is the jellyfish, common in the Black and Azov seas, burning like nettles? ( Kornerot, or Hrizostom .)

13. What Medusa has much more victims than any shark? ( Sea wasp – Hironex from the squad Fleckeri Jellyfish. Occurs in the Great Barrier reef of Australia. Bell diameter up to 4,5 cm Usually “stung” her people are killed in a few minutes. The sea wasp venom affects the nervous system, leads to paralysis of the heart.

15. In some cases, predatory polychaetes dangerous to humans? ( Chitinous hook, with a serrated inner edge of the jaws of carnivorous polychaetes associated with venomous glands. Polychaetes may also have parapodia with poisonous bristles. Suffer from them most often fishermen, brought out the trawl catch. At a strong poisoning there is a sharp pain and swelling in the arms, appear headache, nausea.

16. In any case, some edible bivalves can be poisonous? ( If their tissues are developing certain bacteria or accumulate toxic substances.

17. What mollusk is called the “blue death”? ( Small (20 cm, 100 g) Hapalochaena octopus maculosa, which lives in the coastal areas of the tropical zone of the Pacific and Indian oceans. In the excited state it is covered with bright blue spots. Salivary glands of octopus have venom neurotoxins acting simultaneously on the nervous and muscular system. The bite of this clam privided paralysis of the respiratory muscles . Continue reading

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