Homeland aquarium goldfish is considered to be China, where they appeared over a thousand years ago. The ancestor of this type is considered the Chinese silver carp, and the species has many varieties that are impossible to count. The most common is a Golden fish with red and Golden color and a white belly. The content of goldfish in their specificity is slightly different from the conditions of other species of aquarium fish and do not require special care, but under certain necessary conditions.
The shape and volume of the aquarium is as important for the health of the goldfish. It should have enough space to swim. Here it helps to imagine a family of four living in a Studio apartment. Ideally, the contents of the goldfish aquarium implies the classical form, where the volume is determined at the rate of 4 liters of water per individual. In other words, you should not keep three fish in the aquarium with a volume of 4 liters, the necessary capacity of 12 liters. On the other hand, it is permissible in the same volume of water to contain four zlotys fish. To fish feel comfortable and be healthy, you need to weekly change water in the aquarium, about 10-20% of the total volume of water.
The right temperature
In nature, in natural conditions of the pond or lake, goldfish live in cold water. But when the content of the Continue reading
The Caspian sea should be considered a sea or a lake? Because it is not connected directly with the ocean, according to the strict requirements of geography, therefore, is the lake. But the water in this lake is salty, marine. Therefore, we call this the closed reservoir of the sea. Lake Baikal is a lake or the sea? Baikal is also considered the lake as it is fresh water.
Fish who spend their lives performing in high salty waters of the sea; fish, living from birth to death in fresh water – freshwater.
And the fish that live in the coastal parts of seas, where flow of fresh water rivers? They are usually considered as brackish.
In the Caspian sea is the real sea herring, which live and breed in the sea and in fresh water will never enter. All three groups of Caspian herrings that peacefully exist in one place, related to each other, but they differ in their appearance and biological features: first marine, second is saltwater, third freshwater.
There are species of herring, living in the sea for spawning going far in the river. These fish have a characteristic title: “diadromous fishes”. Continue reading
How I was almost eaten by a shark
Remember the words of captain Cousteau: “the Shark is one of the most magnificent sea creatures. We admire her strength and beauty.” And fear of shark attacks . People they consider to be their eternal enemies in the sea. Still, after one movement of the jaw can bite man, one blow to overturn the boat. Man-eating sharks reach a length of twelve metres and a giant whale grow to twenty.
How many spooky stories told about the shark attack on humans . They attacked the victims of the shipwreck, the divers descended to the bottom to work, bathers at coastal beaches. In Australia. tell, once the shark grabbed his leg to the man who stood almost on the very shore, and the water was just above the knee.
And I there is great hunting refers to the shark trust. Once they’re dead scared one of my close friend. It was he who told me this sob story. I’ll tell the first person. I think it’s better for perception. This story I heard more than once. And every time he began with the words: Continue reading
The construction of reservoirs can have different purposes. Artificial ponds are created for garden decoration, arrangement of recreational areas, fishing, swimming, and also for fire safety – in this case, is the construction of the fire pond. The reservoir can perform any one function or combine several functions at once.
The construction of an artificial pond
The design of the artificial pond is largely due to its functionality. During the construction of an artificial pond for any purpose, be it a pond to breed fish or a pond, we always take into account the wishes of the customer and take into account territorial features of the site. Considering all these important aspects in the design phase, we are able to create a unique artificial reservoirs that meet all the requirements, but also complement the landscape of the site from the point of view of visual perception of space.
The construction of the fire pond
Fire pond is a storage of water used in case of fire. It is required on site to ensure an adequate level of fire safety. Unlike conventional ornamental pond the construction of the fire pond has a number of strict requirements designed to ensure unimpeded use if necessary. Continue reading
Intensification of pond culture includes a complex of measures aimed at improving fish productivity of ponds. These include clearing vodopodayuschih and drainage systems, removal from the ponds rigid vegetation, fertilizing the bed of the pond and sowing his crops, feeding fish, etc. the Greatest effect is achieved by feeding fish. Where the feeding is practiced, used multiple (two, three – five times) the landing of fish, fish productivity of reservoirs is increased 5-10 times.
For feeding fish more suitable drain, not overgrown, well reclaimed ponds. Should not be fed to fish in ponds where the water temperature is not heated above 15-16°, and with a large number of trash fish that eat the feed.
Feeding fish spend in the feeding tables or feeding sites, which have not sedimented areas with a depth of 60-70 cm, well lit by the sun. The amount of feed tables, feed or places is determined on the basis of one space for 200 carp.
Feed the square tables are made of tight-fitting plates of thickness 10 mm. the size of the table 1X1,5 m. At the edges of the nail rim with a height of 10 cm. the Trough is fixed by stakes with the bitches on the end to keep them from floating up, or other way.
For feeding carp use both plant and animal food. From plant Carmouche are peas, vetch, lupine, wheat, barley, oats, mill waste, various oil cakes, residues of alcohol, yeast, sugar, starch manufacture, of the animals – the remains of the meat and fish industry and some others. The nutritional value of these forages is characterized by different feed coefficients. Fodder coefficient in fish farming refers to the number showing the amount of feed expressed in kg. must be eaten by fish to produce 1 kg of her weight gain. For example, the feed conversion ratio of flax meal 4; this means that to produce 1 kg gain meat carp have to eat 4 kg of linseed cake. Continue reading