A common element of landscape design – an artificial pond that can be the envy of your neighbors, if you run a fish in it. To achieve the desired effect of improvement of exterior, the main thing is not to choose the wrong breed of fish. For example, the carp spend a lot of time on the bottom of the pond, where they feed, so will not be visible.
Very popular in country ponds goldfish is one of the ornamental varieties of carp. Quiet and peaceful multi-colored goldfish almost perfect pond. However, shallow (less than 50cm) the pond in the summer is unacceptable for this species, and in winter, the fish need to move into the house in an aquarium up to 200 litres. Bright back decorative carp koi: black, brindle, red, Golden, black, or yellow, are clearly visible from the shore, is bound to attract the attention of your guests. These Chinese-Japanese bred fish to artificial ponds. They are well used to humans and come to get food from his hands. Very greedy and like to dig the bottom of the pond, so the water may be cloudy. The pond need a depth of at least 2m, and they winter in warm areas. Continue reading
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. Continue reading
Sharks were returning to the Adriatic sea. Moreover, populations of predators are increasingly encountered in the North, where the sharks never swam. This fact can not please scientists who earlier raised the alarm about the disappearance of sharks from the Adriatic, but can alert tourists – after all, they both have to face with marine life.
About the encounter with the shark in the Northern Adriatic sea the Austrian Times newspaper said a resident of Austria günther Rath, who along with his friend owns a diving school on the Croatian island of Krk.
However, a collision with a shark Rata has left only positive emotions. “It was just amazing. I am now one of the few divers who met with the shark. I was waiting for this meeting,” describes his emotions Rath.
According to him, the meeting took place last week, when he dived with his colleague. “We approached the shark and watched it within seven minutes. This is enough to have time to take pictures,” said RAHT, Austrian Times, showing the pictures. “Neither we nor the animal didn’t panic. Then the shark swam away”, he added. Continue reading