The best varieties of fish for the child
Why do I need baby fish? What is its nutritional value for a growing body? How much and in what form to give to her baby? You have many questions?…

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FOOD FOR POND FISH
Today, we can distinguish several types of feed for ornamental pond fish: Light fish food(for winter); -Fish food with spirulina (for immune support); -Feed to improve the color of fish;…

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Found the largest predator in the history of the planet
Reconstruction of the head Mapusaurus roseae (AP Photo/HO/Rodolfo Coria). Paleontologists Philip Carey (Philip Currie) from the canadian University of Alberta (University of Alberta ), and Rodolfo Coria (Rodolfo Coria) from…

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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 meters.

It should be noted that interesting fact. what is the ratio of brain to body weight of sharks, almost the same as in mammals, from which the conclusion that sharks are as smart as other animals

Life expectancy of sharks for about 30 years. But the sharks are long-lived. So, the life expectancy of the whale shark exceeds 100 years!

The average rate of movement of sharks about 8 km/h, but during the attack the shark can accelerate up to 19 km/h for Example — the Shark-the Mako and the great White shark can accelerate to a speed of 50 km/h.

The shark is able to feel one gram of blood dissolved in 600 thousand liters of water, at a distance of 500 meters.

Biologists noted the fact. that person mostly attack: tiger shark, hammerhead shark, Mako shark, bioplanta shark, bull shark, the sand shark. blue shark, and sea Fox. Almost half of all shark attacks on humans over the death of a person .

As a result of shark attacks every year in the world affecting up to 300 people. Today in most tourist countries prefer not to release information about shark attacks on tourists. For example, locals — only area of the resort of Eilat, as a result of shark attacks killed 2-3 people per year. Basically it is the tourists bathing the yacht in the open sea.

The shark begins to consider the victim around five meters. From a distance she the victim only feels and hears.

Attacking the shark first plunges into the victim’s body, the teeth of the lower jaw. The upper teeth as the knife cut him, inflicting terrible wounds.

In the stomachs of sharks found a variety of subjects — for example, bottles, jute bags, postal parcels, shells and grenades, spinning rods and even a large African Tam-Tam. In 1952 Italian fishermen said about the sad message delivered by a shark. In the stomach they’ve caught the shark was the bottle and in the bottle — a letter to a French fisherman, who, dying alone in the sea, sent his wife and children farewell.

Almost all calves are born with a full set of teeth and is able immediately to protect themselves and to find food.

New teeth of sharks appear every 8 days.

Depending on the form of sharks, their jaws may be from 30 to 400 teeth arranged in several rows.

The compression force of the jaws, a four-meter shark — 20 KN.

A three-metre shark at one time to swallow a whole beef side.

A week shark is enough food in only a 3% – 14% of its own weight.

Not all sharks are predators. Many feed on plankton, jellyfish, small fish, like the giant whale shark.

Breeding fish in an artificial pond
Nothing livens up an artificial pond, floating like a bright fish. In addition to aesthetic pleasure from the contemplation of them, communicating with them and feeding the fish bring practical…

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Barracuda
The Barracuda is very similar to the pike, however, a large Barracuda (Sphyraenidae) and is called a sea pike for her appearance and hunting habits. It is the same long,…

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