We all know that water is life. Without water can’t live no living creature. And the first life originated in water. Fish one of the many live organisms living in the aquatic environment. They live in the oceans and seas, rivers and lakes. You can see them in the pond and the stream, in the waters of caves and even in puddles. In nature, there are over 25,000 species of fish, and they are divided into two classes: Bony fish (more than 23 000 species); Cartilaginous fishes (9000 species).
To the class of cartilaginous fish include sharks, rays and chimeras. To the class of bony fish include salmon. okuneobraznyh. preobrazenie. clupeiformes. Cypriniformes, catfishes, wildcookie, flatfish, coloscopie.
Fish are cold blooded vertebrates. their streamlined body covered with scales. They breathe with gills, and with the help of fins and tail to swim. Water entering the body through the mouth, passes through the gills, and spilling over her holes. Oxygen enters the bloodstream of fish through the thin membrane of the gills. Do fish have paired fins (pectoral and abdominal), which are located on the sides and unpaired, located on the median vertical plane of the body (back, tail, and anal). Fins help fish to steer, brake, accelerate and keep the balance. Continue reading
The fact that it is extremely difficult to see in the natural world, can be available if you decide to have fish in your garden pond. The observation of the inhabitants of the underwater Kingdom in the process
curious, addictive. Setting the stage for its own fish, You can learn what is hidden in the lives of the inhabitants of the deep.
Who will live in the pond – a matter of taste. Fish fish alike. Some good, some useful, others delicious:
Koi (Japanese carp) are the most popular inhabitants of the garden ponds. Beautiful,
slow, not away to pursue a life at the water surface, do not hesitate to show people the most intimate of details (spawning). However, if you run the koi in the large pond, they will deprive you of the joys of contemplation. There, in the vast “pastures”, carp grow very quickly and will begin to misbehave: to raise from the bottom turbidity, damage aquatic plants and maintain a secretive Continue reading