Late autumn and the behavior of predatory fish
Features of catching predatory fish in the late autumn. Information about how behaves any predatory…

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Innovative technologies for processing of pond fish
The main direction of realization of innovative policy in the Voronezh region is the organization…

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Construction of water bodies for special purposes
The construction of reservoirs can have different purposes. Artificial ponds are created for garden decoration,…

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species

The content of aquarium fish

In Zoological shop sells aquariums, varying in shape and size: rectangular, cylindrical, spherical. For keeping and breeding fish is considered to be a convenient rectangular all-glass aquarium. Many people make themselves decorative aquariums-pictures, aquariums-screens, etc.

To do this, take corner of sheet iron, glass, putty. Metal corner make a rectangular frame, insert the bottom and sides of glass. Then cover the cracks with special putty. Check the aquarium for leaks. Putty you can prepare yourself.

To do this, take two parts of dry sifted chalk, one part of red lead, mixed with hemp linseed oil to the consistency of thick putty, or 1 kg of drying oil oksol, heated to 60°C, adding 0.2 kg of bee wax, 2 kg red lead or gustotertoj paints. All components mix thoroughly and gradually add the chalk or tooth powder until the desired consistency. Set the aquarium on a well-lit area. If there is no such place, for artificial lighting, use fluorescent lamps or incandescent lamps. Lighting the aquarium should be from 8 to 21h. It is not recommended to set the aquarium on the windowsill, where frequently changing light conditions and temperature.

For aquarium maintenance preoperational:

— feeder fish;

— nets of various dimensions;

— a hose with a nozzle to remove the precipitate;

compressor; Continue reading

The flora and fauna of the Black sea

Over the past Millennium has developed this unique shape of the Black sea. This is the most fresh sea, with the lowest content of salt in sea water, the gentle sea-to-person around the globe!

The black sea is the most Northern subtropics in the world . the amazing beauty of the southern nature. It walks under the shade of palm and eucalyptus trees. It’s the heady aroma of blooming magnolias and meadow grasses. The Mediterranean sea brought the most modern inhabitants of the Black sea . The few remaining survivors of the disaster relict freshwater species, including the famous Azov-black sea sturgeon . took refuge in the river deltas of the black sea region .

The flora of the Black sea

The flora of the Black sea includes 270 species of multicellular green, brown, red benthic algae (Cystoseira, Phyllophora, zoster, kladofora, Ulva, enteromorpha, etc.).

In the composition of phytoplankton in the Black sea — not less than six hundred species. Among them, dinoflagellates — loricate flagellates (prorocentrum micans, ceratium furca, small scripsiella Scrippsiella trochoidea, etc.), dinoflagellates (dinophysis, protoperidinium, alexandrium), various diatoms, etc.

The fauna of the Blacksea

The fauna of the Black sea is markedly poorer than the Mediterranean sea . In the Black sea is home to 2.5 million species of animals (including 500 single-celled species, 160 species of vertebrates — fish, mammals, 500 species of crustaceans, 200 species of mollusks, and the rest — invertebrates of different species), for comparison, in the Mediterranean — about 9 thousand species. Continue reading

Goldfish (Carassius auratus).

The Carp Family (Cyprinidae).

Gold, or Chinese, crucian carp (Carassius auratus) found in the wild in Korea, China and Japan. This crucian carp in nature has a Golden hue, especially in shallow, well warmed by the sun waters.

Of all aquarium fish, goldfish have the longest history. Goldfish, a domesticated form of the Golden carp was first bred in China over 1500 years ago, where these, taking advantage of the variability of carp in coloration and in the shape of the body, engaged in the culture of ornamental carp. Goldfish bred in garden ponds and reservoirs in the estates of the nobility and wealthy people. It was the first time goldfish imported in the mid-eighteenth century. Currently widespread many varieties of goldfish.

Main color of body and fins reddish-Golden, the back is darker than the abdomen. Other types of coloring: pale pink, red, white, black, black-blue, yellow, dark bronze, fiery red. The body of a gold fish is elongated, slightly compressed laterally. In ponds goldfish can grow up to 35 cm, but in a normal aquarium its size is much smaller. To distinguish males from females only during the spawning season. Then the female has a rounded abdomen while the males on the thoracic gills Plavnieki there are a white “rash”. Continue reading