Pond fish farming is an economic sector, aimed to the breeding of fast growing species of fish in specially constructed or adapted for the ponds. It also includes such things as selection and breeding work, the use of intensive technologies of cultivation of fish and acclimatization of new species.
The history of pond fish farms in our territories is rooted in the XIII century Already then to St. Sergius monastery were built by the famous Skete of the ponds. Already then it became clear that to breed the fish much easier and more efficient, although fishing was still the main method of its production.
Artificial ponds for breeding fish are divided into reservoirs and ponds. Reservoirs have multi-year flow regulation and water storage. Ponds – annual (which is a big advantage). Pond fish can have a size from 0.1 hectares or more, the productivity of small ponds is much higher as for large water areas to look harder. Nasushchnye ponds oshivayutsya method of pumping water. Continue reading
Dating game Japanese koi at the surface of water. Rapid shots of pike in the hunt for small fish. Flocks of graceful pleasure, tirelessly examining the bottom of the reservoir. This is not a transfer “In fauna”. It is your personal pond
The fact that it is extremely difficult to see in the natural world, can become accessible and familiar, if you decide to have fish in your garden pond. But no, habitual observation of the inhabitants of the underwater Kingdom will not ever: we cannot cease to wonder the endless surprises that are fraught with life companions.
But sometimes these surprises can be very unpleasant. Continue reading
On the Black sea, of course, the jellyfish are not dangerous such as in the Mediterranean or even in the sea of Japan, no krestovnikov (sea wasp) or Portuguese ships are you will not meet, so the mortal danger in the warm seas washing the Russian Federation for You are expected.
However kornerot (blue or yellowish with a pronounced beard) and Aurelia aurita (a small saucer-like creation resembles a lens with a fringe around the perimeter and a small poorly pronounced tail), is quite common, especially after a storm, or in calm weather. Sometimes in a Balaclava or even in the artillery Bay of Sevastopol invasion of the jellyfish is transformed into the accumulation of millions of animals, but it happens in the breeding season, coming somewhat later.
Both jellyfish are harmless to humans, Aurelia almost no stinging, if only in the eyes will not fall or intimate areas of thin skin, and kornerot, of course, can deliver several unpleasant minutes, or hours . depending on how you react to stinging cells of jellyfish and their active substances. Continue reading