Ten years ago, on the island of Sipadan in Malaysia, I took a picture of my first shark. It was almost certainly a shark-Zebra, Stegostoma fasciatum. The current was carrying us along sheer walls, and she, mysterious and beautiful, gleamed in the distance. My heart jumped to somewhere in the Adam’s Apple, I quickly raised the camera and took this blurry picture.
The shark disappeared into the depths, and I got a new hobby — a passion for cartilaginous fish. Have devoted a considerably long time, wrote some articles , even led a couple of sections in Wikipedia. Traveled to different corners of the planet to dive with them.
Of all the sharks I liked Fox, or as she is known in English, thresher. She is like a shark-Zebra with long tail and harmless disposition. Graceful, smooth and swift. Without the aura of celebrity, without the reputation of a ruthless killer. So to speak, a humble toiler of the ocean depths.
Thresher shark (Alopias vulpinus, Thresher shark). Illustration from the book “A field guid to the sharks of the world” Continue reading
Make the pond at the dacha with his hands can any modern inhabitant of the metropolis. And this does not need to resort to heavy construction equipment. The material describes how to make a pond on the site with the help of finished plastic containers and plastic film. Before making a pond in the garden need to carefully plan its development, and bookmarks.
How to make a pond from a film on a plot in the garden?
With the flexible coating to really bring to life most daring idea, maybe only slightly adjust its size in accordance with the actual width of the roll of film or butyl rubber, so there were no big scraps, because the cost of these materials is quite high. We offer you to learn how to make a pond with his own hands using locally available materials.
When choosing a location, before you make a garden pond with your hands, make sure that most of specific points of the plot it looked great, but on its surface one could see an interesting reflection not only of clouds, but the house and plants. Continue reading
Perciformes (lat. Perciformes) — a detachment of the class of bony fish. There are over 6000 species and about 150 families. Characteristic features: part fin rays has the form of undifferentiated acute spines, pelvic fins are usually located under the breast and sometimes in front of them; swim bladder not connected with the intestine.
The squad is part of the Perch family (Percidae), with 160 species, many of which have important commercial value. In particular, the Zander (Lucioperca), several species of which live in the basins of the Black and Caspian seas. Some of them live permanently in rivers, others in the seas, others are semi-anadromous fish coming from the rivers into the sea. Perch (Perca) are widely distributed in the rivers and lakes of Russia. Are also objects of the fishery.
The family of Labyrinth fishes (Anabantidae) is a kind of fish, characterized by the presence of saccular outgrowths of the Gill cavities, which are used for temporary breathing air. These fish, such as anabas (Anabas testudineus), often come out to shore and even climb trees. They live in fresh and brackish waters of tropical Africa, Asia and the Islands of the Malay archipelago. Some species, such as gourami, are used as aquarium fish. Continue reading