Type of feed fish are divided into four groups:
– benthos feeders — fish, feeding on small organisms living on the bottom or near the bottom (benthos), sturgeon, grayling, bream, ruff, etc
– planktology — fish feeding on organisms living suspended in the water column (plankton), Zope, sabrefish, bleak, verhovka, etc.
– mixed feeding — fish feeding on organisms such as benthos and plankton, — roach, bream, IDE, Dace, etc.;
predators — fish that feed on other fishes or animals of their own species — pike, pikeperch, perch, Chub, burbot, catfish, trout, salmon of the Danube. Continue reading
Increase comfort of suburban life leads to a fundamental change in the basic concept of the suburban area. If earlier the area was considered to be well-groomed and the most exploited, if it could detect a slender rows of potatoes and tomatoes, today it is not enough. In the framework of the present development of innovative technologies and popularization of comfortable suburban life, becomes relevant to the construction of artificial ponds that perform not only a decorative function, but also intended for fish farming, which is considered one of the most exciting activities among the owners of country territory. How to benefit from the construction of an artificial pond and the joys of fish farming, as well as how to make a pond to fish in its suburban area – can be found in this material.
The main purpose of an artificial pond: the aquaculture and fee fishing
No matter what purpose you will have a artificial pond, its creation requires some practical training and theoretical knowledge. Continue reading
The inhabitants of the Caspian sea. Animals of the Caspian sea is represented by 1809 species, of which 415 are vertebrates. In the Caspian sea registered 101 species of fish, it is focused the majority of the world’s reserves of sturgeon, as well as freshwater fish such as roach, carp, perch. The Caspian sea is the habitat of fish such as carp, mullet, sprats, Kutum, bream, salmon, perch, pike. In the Caspian sea is also home to a marine mammal — the Caspian seal.
The world grade 4
a summary of other presentations
“Domestication of animals” – Near the man began to live animals. Information about the place and time of domestication of animals. The reindeer herding. The dog was domesticated very early. Reducing the size of the brain. To find out what animals the ancient people tamed. Sheep. People began to domesticate bees. Goat. Ancient tour. Buffalo. Pigs. The man of the stone period. Geese. Chickens as poultry. Cow. Foci of domestication of the horse. The size and shape of the body. Continue reading