Fishing is one of the oldest forms of economic activity of people. Fish for a man — a very valuable source of food (animal proteins and fats), which are easier to digest than vegetable.
Industrial fishing is carried out in the seas, oceans, large rivers, lakes. Fish are grown in specially constructed ponds. Basic ocean space, where year-round fishing, is a subtropical and tropical waters of the Atlantic, Pacific and Indian oceans. These areas of the oceans do not freeze. In areas close to the North pole, the water is cooled, and the Arctic ocean has a permanent ice cover.
Anyone caught in the oceans? Oceanic herring (Atlantic, Pacific), herring, sardine iwashi. These herring are distinguished easily detached scales and gregarious way of life.
In Northern waters catching cod, haddock, saffron cod. These trnkobrani (Fig. 127) can be recognized by the barbels on the chin and three unpaired fins on the back. These fish have long and traditionally fished and loved in Russia.
Fig. 127. Representatives trnkobrani: 1 – cod; 2 – burbot
In the ocean catch and other fish, all familiar names: ocean perch, Alaska Pollock, Grenadier, hake, flounder. Fisheries in the oceans is, as a rule,in places close to the coast, at a depth of 400-500 m. This region of the shelf — coastal ocean shallows at the threshold of transition to greater depths. Here collects a lot of fish. To fish from such depths is designed and gear. In the oceans and seas, fish are caught using trawls, fyke-nets. In our country fish catch in inland seas. For example, small Caspian sprat catches in the Black, Continue reading