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 Continue reading
Tropical fish include fish. found in the tropical environment around the world, including freshwater and salt water varieties. Tropical fish are popular as aquarium fish. due to their often bright coloration. In freshwater fish, this coloration typically derives from iridescence. while salt water fish are generally pigmented .
Fish owners often use the term tropical fish . to refer particularly to those requiring fresh water, saltwater tropical fish referred marine fish . Tropical fish kept for home aquaria include the following:
Wild caught specimens.
Humans the only species born in the capture. The latter category includes lines selectively bred for special geo-ecological characteristics, such as long fins, or particular coloration, such as albino . Continue reading
The Nile perch (LatesNiloticus), from the order Perciformes, also known as the largest bass, is very valuable in quality.
Features of the structure
Several prelucrata head, the jaw protrudes forward, the fins are rounded. The color of the scales is silver with blue. The perch meat is lean, white, texture is soft. Mild fishy smell, used in baking, frying.
The biggest perch in the world is truly gigantic dimensions: 2 meters in length, 130 kg of weight . Perhaps, it is the largest freshwater fish. These dimensions allow to dominate the habitat. A curious fact is that the Nile perch displays its children in the mouth. This provides them a high survival rate. Continue reading