Pond fish farming. Species of fish
In home waters well bred carp, crucian carp, tench, white Amur, silver carp, pike, Zander. With low-value, weed fishes in waters are able to dwell in bleak, perch, gudgeon, roach and loaches. Requirements for the environmental conditions the fish are divided into 2 types: thermophilic and Holodnaya.
Thermophilic (carp) nice grow, develop and prefer stagnant water, which heated well, with a moderately developed in them by aquatic vegetation. They breed in the summer-autumn period of time. Limitat eggs on vegetation. Often by a number of days from the eggs emerge the larvae, which after become fry.
Cold-water fish demanding clean water with a high concentration of oxygen in it. Eggs lay fish, usually late in the fall on stony ground, where it develops for some months. In backyard pond, it is advisable to breed a number of fish species, increases the total output of fish products due to the different spectrum of power. Continue reading
Lean fish has long belongs to the category of healthy food, as eating it regularly together with vegetables, to gain weight will be impossible. Fish for low-fat diets are useful in the composition of 15% protein is higher quality, easier to digest animal protein, but gives fewer amino acids needed by the body for its proper functioning. Also it should be noted that fish is rich in B vitamins, as well as calcium, selenium, phosphorus and iodine. It is worth considering that the iodine content is much higher in marine fish in comparison with lake or river fish.
Most lean fish
Lean fish diet for are the following list:
0,3% fat in tresques
0,5% fat in haddock
Of 0.5-0.9% fat in Pollock
0,8-1,4% fat contain silver hake, and saffron cod Continue reading
Great white shark (Carcharodon carcharias) is one of the largest and most aggressive ocean predators. Back and sides of this fish are gray, brown or black, and the belly is white, why the shark got its name. The average size of the predator is 5-6 meters and weights from 600 to 3200 kg, although was able to measure specimen, the length of which reached 11 meters, but apparently this is not the limit. Instances that are less than four meters, has not yet reached puberty and are considered teenagers.
Scientists have found out an interesting fact: at the end of the tertiary period there existed a great white shark, measuring up to 30 m in length. In the mouth of such a giant could easily accommodate eight people, and if this type of has survived to the present day, the existence side by side wouldn’t do humanity any good. Continue reading