With the appearance of the garden pond there is an understandable desire to populate its inhabitants, and to contemplate his troubled life. If you do not do this on purpose, after a couple of months the reservoir is mastered by the water striders, Daphnia, snails, beetles predaceous diving beetles, larvae of dragonflies, leeches, frogs and even small fish – roach, bleak, upperka. If the fish didn’t start itself, you can bring a trifle from a nearby natural reservoir for the formation of a complete ecosystem pond. However, even these fish, despite their modest size, have good appetite and can cause significant harm to the precious aquatic vegetation, so first I have to make a choice between fish and plants, or be limited to those species that are not eaten by fish.
If you allow the size of the pond, you can pay attention to the larger representatives of ichthyofauna. Very attractive with their bright varied coloration and calm disposition Japanese koi . These gregarious fish often swim to the water surface and to person and gives pleasure to watch them. But are they “hooligans” – lift up the bottom sludge and damaging the plants. For the winter they need sufficient depth – not less than 2 m, or moving the pond in winter garden. So those who have not, have to choose local species.
Often used in many natural waters carp, crucian carp . perch . of these, the last is the most demanding of water quality. Bass are predators, and very voracious, per 1 kg of weight have 5 times more food eaten, so the course is all coastal wildlife – insects, crustaceans, larvae, leeches, and even their own young, except frogs and large tadpoles. Perch cleans the pond, unpretentious. Hunts during the day, so well seen at night drops to the bottom. Continue reading
A huge saltwater aquarium with a couple of real sharks, magnificent coral and other exotic inhabitants – the ultimate dream of every aquarist. However to embody conceived in a life company is not easy, because the development and maintenance of such an aquarium requires not only significant costs but also thorough knowledge.
Usually the volume of the aquarium is chosen based on the maximum size of the sharks, scheduled it to settle. For decorative aquarium sharks the size of 1.5 m is required amount of not less than 1000 litres. Great importance when calculating the capacity of aquarium have the characteristics of potential tenants: for example, whether to dwell in benthic or pelagic sharks .
Since the first able to breathe lying on the bottom, so they don’t need a massive site, like their pelagic counterparts, who have to constantly move .
A narrow aquarium or an aquarium with sharp corners so the sharks hard to turn, especially at high speed, and this greatly lowers their quality of life and even leads to disease. The most convenient habitat for pelagic sharks buitenkant with rounded corners, and even better – a circular aquarium.
Watch the video on “decorative Aquarium nurse shark”:
Aquarium shark saw:
Aquarium decorative shark versions and neighbourhood Continue reading
The main ones are:
erosion of banks, deposition of soil of the coastal meltwater either sand and clay groundwater; formation of bottom sediments as a result of vital activity of water inhabitants (fishes, birds, beavers, etc.), decomposition of plants and leaves, algae and organic debris.
This problem is especially acute for small ponds, characterized by slow movement of water or its complete absence: these are decorative ponds, artificial water bodies (specially created by the accumulation of water in artificial or natural cavities of the earth’s surface) and natural lakes (natural water accumulation in depressions) . as well as the backwaters of rivers Marina for Parking boats and yachts, berths and jetties.
The consequences of the destruction of ponds, lakes and rivers
As a result of the shallowing of the pond water is warming up much faster, which leads to the formation of large amounts of hydrogen sulfide in the sediments of organic origin. In turn, this stimulates the growth of blue-green algae that feed on hydrogen sulfide, and this further accelerates the silting of the reservoir. Nedostatochnosti in water not only prevents the full development of the fish feeding on algae, but can also lead to fish kills – mass loss during hibernation. This is clearly evident in spring, when the ice POPs a lot asphyxiated fish. Continue reading
What is life in the dark, deprived of light the depths of the ocean? The deeper one penetrates into the sea the daylight is, the faster it weakens. A traveler in the depths of the ocean V. Beebe writes that the water in the upper 50 m green color, at the depth of 60 m is greenish-blue or blue-green, 180 m in her clear blue color, at 300 m is a weak blackish-blue. Even at a depth of 580 m Bib caught the last traces of light. Various devices with photographic plates, and more precisely with the help of photomultiplier cameras detected that the light penetrates into the ocean to a depth of 1500 m. Deeper no devices it not get it. But animals and deeper 1500 m. They exist here in complete darkness, in which only here and there the glimmer of ghostly lights cold “living light”. Even on the biggest depth of about 11 thousand m — you can find animals. At this depth, they feel a tremendous pressure.
Life on the sea bottom at a depth of 3-5 m In the center — luminous brittle star hitching a ride, a spider crab and cancer munidopsis. For them. — animals leading a sedentary lifestyle, sea feathers. Top left — red crustacean shrimp.
The oceanic environment is called the realm of monotony. This is particularly true with respect to the depths of the ocean. Here in the water there are almost no oscillations of temperature and salinity. In the depths of the ocean and on its bottom life compared to being coastal in thousands and tens of thousands of times poorer. At the coast the number of benthic animals are often expressed by hundreds of grams or even a few kilograms per square metre of seabed. And in the depths of the ocean is equal to the number of sometimes only a few milligrams on the same area of bottom. The density of plankton in the coastal waters reaches hundreds, sometimes thousands of milligrams per 1 m 3. but in the depths it is limited to milligrams or even fractions of a milligram. This is primarily due to the abundance of food, at the coast and the lack of it in the depths of the ocean. Continue reading
Today we find hypermarkets in the sale of a large quantity of chilled fish and seafood products from Greece, Spain, France, Morocco, Italy, Australia, etc. unfortunately, on sale there is very little domestic production. For example, I often ask this question. But, anyway, we have to prepare that offer. In almost every hypermarket you can buy Italian Dorado, French fish called sea bass, sea the Greek language, etc. How to cook “foreign” fish that it is useful, more about that later.
Sea language occurs most often. On sale are usually transported frozen or chilled. Often the fish is already cleaned and is offered as a fillet, which is very convenient.
Maritime language -a relative of the flounder. Body length up to 60 cm and weigh up to 4 kg. the sole is distributed in tropical and subtropical seas; some species enter rivers, are found in the seas of the Far East and the Black sea.
The sole is almost lean fish. can contain only 2% fat. Sole meat tender and tasty, highly valued by connoisseurs and lovers of fish. Bones in it quite a bit. The language of chefs advise you to cook tender burgers or frying fish in batter to preserve the juiciness of the meat.
Daradaily Sea bream – fish family sparovek, distributed mainly in tropical and subtropical parts of all oceans and adjacent seas, specifically in the Mediterranean and Adriatic seas. The weight of the Dorado ranged from 300 g to 4 kg, and length – from 25 to 40 cm is considered the Optimum weight of from 600 to 800 g: the meat of such fish is young and tender. Continue reading