concentration

Carp

The carp genus, belonging to the family Cyprinidae, represented by two species — silver and gold, or common carp.

The Golden or common carp is as carp and common carp dorsal fin long, hard spiny rays in dorsal and anal fins, but is distinguished by the absence of antennae and a single-row pharyngeal teeth. The back is dark brown, while the sides are Golden with a copper tint. Pectoral and abdominal fins reddish. It lives in Central and Eastern Europe, and in Siberia in swampy, overgrown ponds, in rivers is rare. Likes silt. For the winter carp buried in silt and hibernate even when shallow waters freeze to the bottom. They are able to burrow in the mud at a depth of 70 cm and this allows them to survive the dry summer, when shallow body of water completely dries up. It sustains the concentration of oxygen dissolved in water to 0.5 mg/l, lowering the pH to 4.5. The Golden carp is one of the most hardy species of fish and in some waters is the only representative of the fish population. Can reach masses up to 3 kg, and I individual weighing about a pound are a valuable trophy.

With all the advantages of common carp, unfortunately, it is slow-growing. Although in the southern regions the first year of growing under favorable conditions may reach a weight of 20 to 50 g, in the second year — 200 and even 300 g. In the middle zone two-year old Golden carp in prodajne exceed weight 100 — 150 g. Females are larger than males. Reach sexual maturity at age 3 to 4 years. Continue reading

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