An important reserve in increasing fish productivity is the introduction of fish culture in the practice of the method of joint cultivation of fishes of several kinds . that most fully use feed resources of the reservoir. Practice confirms the possibility of growing in a variety of combinations that reduce competition for food fish such as carp, carp, white and variegated silver carp, white Amur, etc.
Silver carp . With the introduction into farms of joint cultivation of fishes of the composition of the productivity of fish in ponds is 20 – 30 kg/ha water area. When grown with carp and herbivorous fish in pond farms of the southern areas by herbivorous fish receive an additional fish for at least 6 – 10 t/ ha, in ponds in the forest-steppe up to 3 – 5 kg/ha.
The silver carp eats all types of algae that occur in fresh water. Its power is supplied by filtering phytoplankton through a kind of arranged Gill apparatus. In Biotechnics of artificial breeding using the method of pituitary injections, where to produce offspring using the pituitary glands of fish / kg females. The ripening females after hypophyseal injections depends on the temperature conditions in the spawning basins. When ripe, the prevailing temperature of 21 – 26 degrees Celsius. Continue reading
Among the inhabitants of the aquarium viviparous fishes aquarium occupies one of leading places. Most fans of aquarium fish begin their fascination with viviparous species. The interest in these fish could drag on for years, not only beginners but also for experienced aquarists. Such keen interest is explained by the peculiarities of reproduction viviparous fish, easily their contents, as well as a large variety of offspring, created by breeding and crossing varieties. Such features give a good chance for a relatively short period of time to obtain a variety of varieties of aquarium fish, which will differ from existing species.
Especially breeding viviparous aquarium fish
The reproduction and the content of viviparous fishes aquarium is quite simple. Excellent adaptability enables them to tolerate the increasing temperature and strong pressure, and very hard water. For most species of viviparous fish do not need an aquarium large dimensions. It is desirable that the lighting was quite bright and natural, but in the absence of suitable artificial light sources. Good conditions for development and reproduction of viviparous fish are in aquariums with the presence of free space for swimming and at the same time dense thickets of plants. Continue reading
What is a water garden?
Ponds, fountains, streams, waterfalls, cascades, rocker bridges of the chain of ponds that is called a water garden, these structures, you can draw attention to your site. Positioning the water garden preferably in the monitored location. Of course, from an economical point of view, these water gardens better to arrange on barren land.
How to make a plot a natural pond?
Modern technologies and materials allow to make the ponds, the bottom of which is covered with clay or plastic film. With concrete bottom to make the streams, and there to wash the gravel, and you will feel that at the water’s rocky bottom, and even with a running light streams. Don’t forget that ponds require constant attention and care. But if on your site the river flows, then you should sugarcoat it and clean, where you can make a deck over the river, backlight, as well as in the gazebo. Swipe the lights under the water and you will have a inner glow water. Can make the backlight on the water, for example, a floating glowing orbs, they look like water lilies, when the breeze, that will randomly move, it looks very impressive. Continue reading