Our planet is inhabited by almost 20 thousand species of fish. About 1/10 of them are commercial. They give people a lot of valuable products: food, medicines, fertilizers for the agriculture, pet food, industrial oils, raw materials for light industry.
To move in the water, have to spend a lot of energy. Nature took care of the fish, giving their bodies zaradougou streamlined shape. The speed of the fish (scombridae, tuna, sharks) in its form and speed resemble that of a torpedo. The fastest fish is considered fish-sailfish, swordfish and Marlin, which reach speeds of up to 130 km/ h. The rate of freshwater fishes is typically lower, but in critical moments of his life, in the moment of impending danger or in the event of an attack on their prey, they can take a short term shot at a speed of 1-2 km /h. Good speed swimmers usually are found in rivers with current (sabrefish, Chub, nase, Dace, salmon). The speed of the fishes living in stagnant water far below, but they are more nimble, nimble (carp, bream, Rudd). Continue reading
A fisherman from Transcarpathia (Ukraine) during sports! fishing on the Tisza river caught a big catfish – fish draped 52 kg, and its growth reached 2.10 m About the secrets of fishing gear for catfish and how to catch a record catch, read on.
Yuri balázs, a resident of Pyiterfolvo (Vinogradovsky district, Transcarpathian region, Ukraine), went fishing on the Tisza river in the neighboring village of Forks. The place of fishing, he chose a road bridge – not in vain, as it turned out. Yuri has long been hunted for its record-breaking catch, so the question “Where fishing?” was rhetorical.
“Under the bridge over the river washed a few pits with depths ranging from three to ten meters, and there are catfish, – said the fisherman. – This fish has twice recently caught my hook on this fish, but each time frustrated because I threw from the bridge”. Continue reading
Diversity of fauna, in particular fish, the Volga is considered one of richest rivers. In its pool there are 76 species of fish and 47 subspecies.
The Volga River
The Volga is the largest river in Europe, its length is 3531 km, and the Origins of the river are in the South-West of the Valdai hills, Tver oblast. The river Delta consists of a large number of ducts, Islands, which often are overgrown with reed and cattail. Volga belongs to relatively deep waters. In the upper reaches of the Volga river is a small river with low-lying marshy shores. In the river is very well developed aquatic vegetation, with the exception of some places. Volga has a sandy, silty-sandy and silty soils, in the shallows of the river the soils are gravelly or pebbly.
Fish world of the Volga
The fish living in the river Delta, are very different from each other in size and way of life. The smallest fish of the Volga – grained goby length of 2.5 cm and resembling in appearance a tadpole. The biggest fish of the Volga – the Beluga, the length of which reaches up to 4 m. Continue reading