The structure of the pharynx, the feeding of fish.
The structure of the pharynx is also closely linked to feeding habits of fish. As indicated, the number and structure of Gill rakers may be very different — from a…

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Goldfish in the pond
Goldfish (lat. Carassius auratus auratus) subspecies of the freshwater fish of the genus carp. Her ancestor was domesticated by the man in the VII century ad, and is one of…

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meters

Interesting facts about the Mediterranean sea

A cruise in the Mediterranean sea is very popular with tourists. This is an opportunity to visit several countries in one vacation. Here are some interesting facts about the Mediterranean sea:

The very name of this inland sea comes from the Latin Mare Mediterranea — sea in the midst of the Earth. This term was coined by the ancient Greek writer Julius Solin.

Modern computer technology has helped scientists to calculate that the filling of the Mediterranean sea occurred due to the catastrophic floods that occurred 5.3 million years ago. It is noteworthy that it was filled for two years. The article describing this research, published in the journal Nature, New Scientist gave a brief retelling.

Tectonic activity of this region caused the formation of a wall in place of Gibraltar. She was blocking the ocean from the sea that turned into a lake. Previously thought that the isthmus had a very powerful waterfall, which was considerably higher than Niagara, he filled the sea for about 10 years. Continue reading

Black sea (Pont Evxs)

The greatest length of the Black sea from North to South — 580 km and a maximum depth of 2210 m, the average — 1240 m. the salinity of the water is approximately 18 ppm. The depth increases pretty quickly. Over a sloping beach near Evpatoria, Feodosia. On the South coast, in mountain areas, the depth increases more rapidly: a few meters from the shore you have to swim (or, in the alternative, to swim along the shore). Be careful, even at a short distance from the shore can be strong currents to deal with which is not prepared person is quite difficult. But mostly this does not apply to places of mass bathing (if not to swim too far). Waters of the Black sea, as a rule, not susceptible to freezing. The average sea temperature in winter ranges from +6 to +8 degrees, in summer — from +22 to +24 degrees (can warm up to 26 degrees in a particularly hot summer). However, it is worth noting that the Black sea could throw a “surprise”: one day deep cold currents cool the coastal waters up to 12 degrees, even Continue reading

Artificial ponds

“The trade of fish native case of thieves. And therefore, the salary for them to put miserable, but to hang one in the year that others do not want.”

An artificial pond for breeding fish.

However, the creation of artificial water bodies (ponds) for breeding fish in home gardens has become a very popular hobby in recent years, and our firm is very actively developing this area of its activities, with qualified specialists in this field.

The pond, unlike lake is a water body of artificial origin.

The types of ponds can be divided into flowing and isolated, which in turn conventionally divided into fishing and no fish, but aquatic vegetation (the already and the other is pools). Continue reading

BLACK sea and its inhabitants: who is dangerous to humans?
Fortunately, the really dangerous creatures, meeting with which threatens people severe poisoning, injury or even death, in the Black sea no. But still, one should be wary of some of…

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Pressure filters Clear Control
Clean water is essential for the biological balance in the garden pond. Water quality has a direct impact on the growth and reproduction of plants, the growth of microorganisms and…

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