prey

The biggest catfish

Want to know where was the biggest catfish caught? Then read on this fascinating material, which we have prepared especially for you.

Everyone knows that the largest creatures on our earth are marine inhabitants. But this does not mean that fresh water can not boast of their giant representatives. River giants have long been commonplace for the modern man. Catch one of the river dwellers will be able to provide a delicious meal the whole family for a few days. It is first and foremost about soms. This wonderful fish has become a familiar inhabitant of reservoirs of Russia and CIS countries. But the major representatives soms were seen and other countries.

The biggest catfish man-eating

Few people know that catfish possess limitless power. There were cases, when starved fish could flip the fishing boats and attack fishermen. Sometimes it happens that soma attacked the washing of water bodies of women, literally snatching them from the hands of underwear. Such aggressive behavior of the catfish, in fact, it is not surprising, because it is the only large predators that live in rivers. Continue reading

How many teeth does a white shark?

On the question about the number of teeth of a white shark cannot be answered unequivocally because they are located in several rows. Their number is variable, and depends on the size of the animal, its age. Some time back the tooth is in the gum, taking a vertical position only when the free space because, unlike the teeth of mammals, they do not have long roots and they are able to move about freely in the gums. Upper teeth, by the way, arranged in one row and larger than the lower. But the lower teeth are more acute.

The modern great white shark teeth have a triangular shape and as sharp as blades. Such teeth easily cut through large pieces of meat with large fish or mammals, or to bite prey in half. The porbeagle teeth tone, acute and recurved for grasping and retaining a nimble and slippery prey. In benthic species, feeding on molluscs and crabs, the teeth are thick and blunt – these tools comfortable to chew solid calcareous shell and the shell. The teeth are in the mouth and in the throat of many series – one thousand and even more. Working teeth are in the front row. They easily fall off, and his successor shall be nominated from the depths of the jaws of the all-new series is a real “factory tooth”. Continue reading

The intensive method of fish farming

An important reserve in increasing fish productivity is the introduction of fish culture in the practice of the method of joint cultivation of fishes of several kinds . that most fully use feed resources of the reservoir. Practice confirms the possibility of growing in a variety of combinations that reduce competition for food fish such as carp, carp, white and variegated silver carp, white Amur, etc.

Silver carp . With the introduction into farms of joint cultivation of fishes of the composition of the productivity of fish in ponds is 20 – 30 kg/ha water area. When grown with carp and herbivorous fish in pond farms of the southern areas by herbivorous fish receive an additional fish for at least 6 – 10 t/ ha, in ponds in the forest-steppe up to 3 – 5 kg/ha.

The silver carp eats all types of algae that occur in fresh water. Its power is supplied by filtering phytoplankton through a kind of arranged Gill apparatus. In Biotechnics of artificial breeding using the method of pituitary injections, where to produce offspring using the pituitary glands of fish / kg females. The ripening females after hypophyseal injections depends on the temperature conditions in the spawning basins. When ripe, the prevailing temperature of 21 – 26 degrees Celsius. Continue reading

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