Rare fish with amazing behavior and unusual appearance
Today discovered and described about 30 thousand species of fish . Some of them can boast of such unusual appearance that it is hard to believe that it is really…

Continue reading →

Marine aquarium in the house
The aquarium is a part of nature in your home or office, but in order that it gives pleasure and positive mood, for him to care. You first need to…

Continue reading →

The cause of death of dolphins in the Black sea
In the waters of the Tuapse environmentalists have found a secret landfill of waste oil. Area hazardous disposal - two thousand square meters. The cause of mass Mora dolphins found…

...

Predatory ponds
As pike and perch in our waters are not as widespread as for example carp, information about the waters where they live is of great value to fishermen, especially beginners.…

Continue reading →

These amazing fish

In the World ocean inhabits 180 thousand kinds of animals

According to scientists, man eating fish and other marine animals that uses only 0.02% of the primary production of seas and oceans.

Blood pressure in arthropods 5-10 mm Hg. article on the green frog – about 40, active fish – 65-75, birds and mammals – 120-180.

In rivers of Central Europe is inhabited on average 40-50 species of fish in the Danube – about 70 species, while the Amazon is more than 1 thousand kinds of all kinds of fish.

Many animals are very demanding in terms of ambient temperature. For example, Antarctic fish Trematomus lives at water temperatures of 1.9 O. temperature Fluctuations in their habitat at all times of the year do not exceed 0.1 A. Already at +60 the fish dies.

The first fish appeared in the Paleozoic era

The development of the Earth is divided into five time periods called eras. The first two eras, archeozoic and Proterozoic lasted 4 billion years, nearly 80% of the earth’s history. During arkasia was the formation of the Earth, any water and oxygen. About 3.5 billion years ago appeared the first tiny bacteria and algae. In the era of the Proterozoic, about 700 years ago in the sea were the first animals. It was a primitive invertebrate creatures, such as worms and jellyfish. The Paleozoic era began 590 million years ago and  million years. Then the Land was covered with swamps. During the Paleozoic there were major plants, fish and amphibians. The Mesozoic era began 248 million years ago and 183 million years. At this time the Earth was inhabited by giant lizards, the dinosaurs. There were also the first mammals and birds. The Cenozoic era began 65 million years ago and is still ongoing. At this time, any plants and animals that surround us today.

Water desert

In the Pacific ocean southwest of California far from the equator nearly to the Hawaiian Islands is a water desert. In this area, filtered 300 million liters of water, one would gain only a quart of marine organisms.

At the beginning of the Strait of Gibraltar, linking the Mediterranean sea with the Atlantic ocean, the seabed forms a barrier height of 320 m. in addition, there is a powerful undertow, directed towards the ocean. This explains that the deep ocean inhabitants are not able to overcome these obstacles and in the Mediterranean sea at a depth of 2 thousand meters found only 4 species of fish.

The biomass of plankton in the sea depends on depth. In the Atlantic ocean, for example, on the surface of water in 1 liter of water contains more than 100 thousand organisms. At a depth of 50 m in 1 l of water you can find is only about 40 thousand organisms at a depth of 100m – 5 thousand At a depth of 5 km in 1 liter water of about 20 found in living organisms.

Aquarium fish, parrots, breeding
Many people are aware of the fact that the breeding and keeping of aquarium fish has a calming effect on the human condition. The observation of these lovely, beautiful and…

...

Fish in the pond.
So you want to fish lived in a pond. But what fish? The most popular fish in the ponds and pools of goldfish. She is beautiful, has a lot of…

...

The cause of death of dolphins in the Black sea
In the waters of the Tuapse environmentalists have found a secret landfill of waste oil. Area hazardous disposal - two thousand square meters. The cause of mass Mora dolphins found…

...

A few facts about sharks
he oldest sharks there are over 400 million years, sharks are older than dinosaurs. There are about 350 species of sharks; their size can vary from 15 centimeters to 18…

...