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