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The underwater ocean world of giant predatory fish.

The shark with the Latin name is Galeocerdo cuvier biologists determined in 1822, and from that time she was nicknamed the tiger shark. These sharks got their name due to the dark stripes and spots that cover the body of the “minors” of this species. Also in this title to show all the cruelty that is inherent in the shark, which is the second most deadly shark after the great white.

It should be noted that the tiger shark is a part of the family Carcharhinidae Requiem sharks. Despite its reputation, this predator also got another nickname: “sea scavenger” or “scavenger of the sea”.

It turns out that the tiger shark can eat anything from sea turtles and seals, which constitute the bulk of its diet, to more exotic kinds of “food” – rubber tires, beer bottles, nails, a driver’s license, clothes, explosives, crocodile heads, cats, pigs, and even pens, with all their inhabitants (there were precedents). In Australia, for example, was caught tiger shark with a whole and intact head of the horse in the stomach!

Why the tiger shark is called tiger?

So who are these deadly and eternally hungry predators? To begin with, what is this species different from other sharks? Well, as we already mentioned, for shark’s distinctive “tiger” colour, which is most noticeable in young specimens. Tiger sharks have a white or yellowish belly, the rest of the body is painted in cool colors range from bluish-green to dark gray.

At birth these predators have a length of from 50 to 70 centimeters. They grow much larger. An adult tiger shark can reach 4 meters in length and weighing around 680 pounds. Some individuals can grow up to 5 meters and weight gain up to 900 pounds. Continue reading

The device of the ponds for maintenance and cultivation

For the keeping, breeding and rearing fish use of different ponds: lined, dug, used peat quarries and instream ponds, cages and basins, small reservoirs and lakes.

The operation and construction of pond intended for fish production, requires compliance with certain rules, which correspond to fish and hydraulic requirements. First, you should determine the orientation of use of the reservoir, i.e. it is designed for the cultivation of food fish or for use in the design of the site. This will depend on its size, the device of the reservoir, depth, shape, mode of operation.

A pond for the cultivation of food fish is very different from the devices of decoration. To this reservoir are a bit different requirements. It does not make sense to do complex bottom topography, indented coastline, depths off the coast, laying on a bed of special soil, decorative elements. The main attention should be paid to the layout of the bed of the pond, the supply of the reset options and a good water supply. Fish farming will benefit, assuming the decision of questions of operation of the reservoir and construction. If the device pool determines much the size of the land plot, which is released under the dispensing reservoir. On the one hand, this ustroistvom or group of water bodies on a farm with a large land area, with another pond in the garden. We must remember that the pond in the garden mostly satisfied mostly your own needs, while the farmer needs to determine how important will be the farming in agricultural production. Following from this, determine its place in economic activity. Perhaps it will be agriculture, where the cultivation of fish will be your main activity or fish farming will become an integral part of the farm with the use of the reservoir complex. The latter area has received wide distribution as well as cultivation of fish goes well with other branches of agricultural production. Hence in the construction of the pond should not exclude the possibility of comprehensive use, for example for watering livestock, watering the garden, fire fighting purposes, breeding waterfowl. Continue reading

The importance of fish in human nutrition

There are some foods that are simultaneously rich in iron, phosphorus, zinc, magnesium, calcium, selenium, vitamins A, E, D, and amino acids that are necessary for the normal functioning of the cardiovascular system, thyroid gland and stomach. But in fish, all these elements abound. Therefore it is very importance of fish in human nutrition. In addition, this product small fat content (30%), it is perfectly assimilated by the human stomach digests the protein contained in fish, only 1.5-2 hours compared to 5 hours it takes to digest, say, beef.

The importance of fish in nutrition

People suffering from excess weight, just perfect river fish, which contains 2.5 grams of fat per 100 grams of weight. But suffering from diabetes can have it without any restrictions, because the number of carbohydrates it is small – only 0.1%.

Fish, competing in this regard with the chicken, is an excellent source of high quality protein which contains all necessary for normal functioning of amino acids. It also differs from meat protein by the presence of methionine.

Due to the fact that the collagen that makes up connective tissue, has the property of rapid transition in a soluble form, fish is easy to cook, and its tissues become loose, blagodaram provides maximum and rapid absorption of all nutrients. The most rich in protein fish include salmon, trout, and salmon, Beluga, easier to say that all representatives of groups of sturgeon and salmon. Great importance in human nutrition fish is also underpinned by a very high nutritional value due to high concentration of fatty acids. It refers to oily marine fish – salmon, mackerel, herring, trout, salmon and other things. Continue reading

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