The ocean abounds with excellent swimmers who, in the words of the famous German nineteenth-century biologist Ernest Haeckel, “free to find their own way”. They can resist the strong current of water and to choose their own way, different from the animals of the plankton. The combination of these actively swimming animals E. Haeckel called the nekton, which means “floating”. Technically, the nekton are aquatic snakes, birds, and animals, but here we will talk only about the two groups of nektonic organisms — the fish and cephalopod molluscs.
Important nektonic animals adaptations to life in the water column of the ocean, according to Professor Yuri Aleev are maintaining the body in a suspended state, creating a driving force, reducing the resistance of the counter flow of water, control the movement of the body, as well as in the ability to disguise and protection. 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