allows

Predatory fish

The well-known and widespread fish. Externally, it is so different from other fish that mix it with any of them impossible. Elongated, laterally compressed body, with far assimilated back dorsal and anal fins, reminiscent of an arrow with feathers – this addition allows the pike do ambush lightning shots.

Wedge-shaped head with an elongated snout has a huge mouth, lined with sharp teeth folded back.

Painting pike often spotted or striped and extraordinarily volatile. On a clean shallow water it is light in the deep places – dark. Like plaice, pike able to change color with a change of place, adapting to the color of the bottom of aquatic vegetation. This ability makes it extremely unobtrusive allows you to successfully hunt for prey.

Wolf, barracuda and freshwater crocodile called pike. During Jora it really lacks all living things – frogs, mice, and even large birds. And utyatnitsu her nickname is no accident. From freshwater barracuda no mercy even their own offspring.

But zhor pike is three to four times a year. In addition, it is very slow to digest the prey, so a long time just watching an ambush for moving fish.

It grows rapidly. By the end of the first year of life, it has a length of 15-20 cm. The five-year fish reaches 55 cm and weigh about 1,5-2  kg. Continue reading

Sharks

Sharks

The ancestors of modern sharks appeared in the oceans some 350 million years ago. The Earth looked very different then than it is now: continents and oceans have not yet purchased our usual shapes. Ancient sharks swam where nowadays sow wheat and build cities. Therefore, fossils of sharks sometimes discover for tysychi kilometers from the sea. Paleontological scientists studying ancient forms – most often find shark teeth. Fossil shark teeth affect its size. Most krupnye- length of 15 cm. And a weight of 340 g – belonged to the monster in the mouth which could put a man gets up to his full height, and it reached 13 meters in length!
After hundreds of millions of years, descendants of the ancient sharks overcome thorny path of evolution continue to surf the seas and oceans. Sharks, of course, in many ways inferior to more progressive in structure bone fish. Sharks do not have kostey- their skeleton is composed entirely of cartilage (though their ancestors had the skeleton). The gill slits are not covered shark gill covers. And most importantly, sharks, like all cartilaginous fish, no swim bladder. In part, though, the swim bladder shark replace fat deposition in the liver. To stay in the water and sink to the bottom, the shark spends his life in constant motion. Sleep she also prihoditsya- not only coastal and reef sharks can afford to rest on the bottom underwater caves. Gills sharks are not so
soversheeny like a fish bone. and extracting only half of the water of dissolved oxygen (y kostnyh- 80%). The shark must continually move more and to its gills continuously washed with fresh water. Not by chance the shark in captivity become “sleepy” from lack of oxygen. Sharks caught in the network, often suffocate and die long before they pull out. Continue reading

Go for asp!

Go for asp!

Among the inhabitants of the underwater world, especially among predatory fish, there is a striking resemblance habits, characters with representatives of the animal kingdom. Thus, the largest freshwater predator – catfish, like the bear is omnivorous, and will not disdain carrion, all the warm season batten, but in the winter as in the den, falls into deep pits koryazhistye.
Fanged perches like a family flocks of wolves at night, mercilessly destroy the fish trifle. Only cold lighteneth moonlight pearlescent eye will give walleye, robbed on the sandbar. Perches during Jora, like a pack of jackals, draped defenseless fry, knock them into a dense flock and begin not knowing measures carnage – overeat, vomit and again thrown into the midst of boiling “pot”. Well, carp, carp and bream as wild boars, plow bottom silt, but feed on the young shoots of underwater and do not skip past unwary fry.
The reasons for the failure of many annoying inexperienced spinnings rooted in ignorance of the habits of the asp, and the related specific features hunting him.
At the site of the reservoir, where the Predators found themselves bursts, it is worth while to observe the water surface. It turns out that the “fight”
asp is almost in the same field through strikingly regular intervals. Such places can be a little. This suggests that each predator has its own territory within the strict limits on which it runs along the same route. If the waters of the visible hunt a few fish, the picture is more complex, but it is quite readable. In calm, no wind, weather, you can trace the path of each predator: moving near the surface of the water, asp driving in front of a clearly visible waves or visible light that moves on the water surface ripples; sometimes it appears like a shark’s dorsal fin. Continue reading

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