ancient

Black sea – description.

In the late 17th century Peter the great, meaning “to be firmly on the Azov and Black seas”, has a boatload of “Fortress” to explore the shores of the Black sea. Sailors measured the depth and made sketches of the coastline. Thus was made the first Russian map of the Black sea. Although, according to historians, the geography of the Black sea was well known to the ancient Greeks. They laid here the trade routes and built beautiful cities.

The black sea is an inland sea, belonging to the basin of the Atlantic ocean. With the ocean this body of water through the channels sequentially connects the Marmara, Aegean and Mediterranean seas. Over the Atlantic, and originate those cyclones, which bring the black bad weather. Through the narrow Straits hindered the water exchange between the seas and so the tides on the black sea coast is virtually invisible. Only occur under the action of strong winds and wind-effected processes can raise or lower the water level 30 cm On the North-East of the shallow Kerch Strait links the Black sea with the sea of Azov.

The radiant variety of its shades from blue to emerald-blue sea in all languages of the world is called “black”. The sea on the map resemble an oval, stretching from West to East on the 1150 km and from North to South nearly 580 km Severskoe location between the extreme southern point of the Crimea and the Turkish coast, which are separated by only 228 km maximum depth of 2210 m. the sea Continue reading

Question and answer on the care and maintenance.

The key to a healthy aquarium – the right choice of its inhabitants and care for them. This will be devoted to several topics, including how to choose and set up an aquarium, what should be the soil, plants and more. When buying aquarium fish it is important to remember the fact that, as you would not like the diversity of sizes and colors, to accommodate in one “room” best fish of the same species or closely related. Before purchasing, carefully review the alleged habits of the Pets, not that your chosen species eat each other

It turns out that our aquarium fish are not so simple. The first fish appeared about 300 million years ago – it was one of the first vertebrates. Fish, the most ancient group of vertebrates. The variety of fish amazing – in a class of fish includes about twenty thousand species, but in aquariums, mostly inhabited by bony fish. It’s not any special selection, but the fact that almost all modern fish can be attributed to that unit.

Breeding fish to start, of course, with the selection of the aquarium. At the moment on sale you can find containers made of plastic or glass. In operation they are quite equal, so each of them has its pros and cons.For example, the aquarium glass is not scratched during cleaning, but glass is easy beats, and as a result of long contact with water on the glass, a layer of lye. Plastic aquarium safer from two points of view: first, it does not break, and secondly, the risk that caviar is fish in it will die, tends to zero. However, plastic aquarium hard to clean, because one wrong move scraper can cause unsightly scratches, which will ruin the entire experience. Continue reading

Fish

Never thought fish can make sounds, interested. rummaged a little in an Internet and here is what I got

The fish themselves can make sounds. Publish them they are not only random, but also “consciously”. Soulful Solovyov among the fish there. Too primitive their tools. The sound is produced by squeezing bladders, snapping the knuckles of the armor that has it, or Gill covers, gnash their teeth, and vertebrae on the vertebrae. Sounds appropriate: fight, crash, screech, howling, chirping, grunting.

Marine warrant officers are buzzing. Trigla grumbles and croaks not musically, but if the fish will gather a lot, they have something similar on the market. Fish-frog – kin Midshipman is buzzing so eardrums are ready to burst!

“Close to fish these horns have the power of a train or riveting machine, reaching for ear painful intensity exceeding 100 decibels” (Professor T. S. Race).

Fish emit and perceive ultrasound. But among the fish a lot of “singing” fish that emit strong sounds. Fish dictionary words. dark slab – “HRAP-HRAP”; light gorbyl – “points points”; the scat – “ooh-ooh”; gurnard – “trek-trek”; the barks mackerel being caught, tropical flounder – the sound of a harp or bells, river catfish grunts, sea breams grunts, mackerel hisses and grunts like a pig,chirps cod, sprat and hum. Continue reading

Piranha in the aquarium
There are many sorts of stories and even legends and myths about the bloodthirsty creature, about how the travelers were attacked by piranhas or when piranhas eat a huge beast…

Continue reading →

The construction of ponds and lakes
About technology The arrangement of the reservoir for fish production is significantly different from how built swimming pools or ornamental ponds artificial, because it often involves different technologies and equipment.…

Continue reading →

Shark catfish
Miniature logo people use floats in my aquarium. Pulls its huge eyes, cuts smooth water surface with a sharp fin. Charming quirky! Like the shark, and there seems little aquarium…

Continue reading →