A huge mistake beginner aquarists is the desire to acquire a goldfish . Yes, indeed, this representative of the carp family looks very impressive in the aquarium. But it’s just as capricious. Not having the relevant experience in maintenance of aquarium fish you can easily lose your pet. On this before you make a striking and beautiful instance and maybe a couple to learn the specifics of caring for them.
Where did Gold fish
The first aquarium goldfish appeared a long time ago, about a thousand years ago. Domesticated, this species of carp the Chinese. And the ancestor to modern beauties was an ordinary goldfish. Bred by artificial breeding of fishes were very valuable not only from a species standpoint, but also with the material. Then they cost a lot of money. This was especially true of rare species. Continue reading
Living in the depths of the North Pacific ocean macropinna the Smallmouth has a very unusual appearance. Her transparent forehead, through which she could spy out the production of their tubular eyes.
Unique fish opened in 1939. However, at that time did not work well enough to study, in particular the structure of the cylindrical eyes of the fish, which can move from vertical to horizontal and Vice versa. It was done only in 2009.
Then it became clear that the bright green eyes of this little fish (it does not exceed 15 cm in length) are filled with a clear liquid chamber of the head. This camera covers a dense, but at the same time elastic transparent membrane, which is attached to the scales on the body of the Smallmouth macropinna. Bright green eyes of fish due to the presence of a specific yellow pigment. Continue reading
…do you personally own a huge amount of iron? Know how much of it do you? Thirty-five tons! So much falls on each inhabitant of the planet, if you extract all of the iron dissolved in sea water.
…on geographical maps 18-19-th centuries can be found melted geographic point? It is an island of the Royal Campaign, the island is emerald island, the Nimrod, Dougherty island. Mariners just misses put them on the map. In fact, these Islands were… of large icebergs.
…in the ocean there are unusual vortex with a diameter of 100 kilometers? It was discovered by oceanographers from the University in Kyoto in the Pacific ocean near the Japanese Islands. Scientists struck by the fact that the axis of rotation of this vortex is not vertical but horizontal. A huge amount of cold water rises from the depths once again and slowly sinks to the bottom, rotating like a wheel. Continue reading