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
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
Now almost every house has a tank (but if not, then after reading the article be sure to get it!). His presence, not counting the one I know of negative point – Allergy to fish, which occurs in one person out of five hundred thousand, it is solid pros.
First, it is just beautiful. The highlighted greenish water, light bubbles of air underwater decoration create a very fascinating picture.
The aquarium has a calming psychological effect. Ten minutes alone with the aquarium will be half an hour of relaxation.
Aquarium water is an excellent natural humidifier in the house.
The content of the aquarium teaches responsibility (to care for fish and plants, feed them, clean the tank, etc) – in General, what others consider a disadvantage can be turned to advantage.
But in addition to the home aquarium can be earned. The idea is simple: buy fingerlings, grow them to sell. For this purpose the best suited aquarium fish Guppy . Here’s why:
Guppies have phenomenal survival. These fish will survive in any, even the most inexperienced aquarist. Continue reading