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
MARINE AQUARIUM, a vessel for keeping marine animals and plants. Is usually large in size (200 litres), as its inhabitants usually larger than the inhabitants of freshwater aquariums.
Compared to freshwater marine aquarium is more time-consuming in use, since the secret of the successful maintenance of marine fish is the maintenance of conditions corresponding to their natural habitat. Often contain well-dressed inhabitants of tropical coral reefs. It is interesting to contain cold-water marine life. Such an aquarium should be in the summer especially cool.
Sea water is prepared artificially by division or from commercially available ready mixes for marine aquariums. It must have a salinity of 30-35‰, pH of 8.0 to 8.4, temperature depending on the content types. You need a constant control of temperature, pH, density (measured by hydrometer) and water salinity. Most dangerous is the accumulation of toxins in the water due to protein contamination. To combat protein contamination need a strong filtration system and water reclamation, as well as weekly substitution is not less than a quarter of the fresh water well preferirana water of the same density. The destruction of proteins contribute to aquarium lighting UV lamps and ozonation of water. Primenjajutsja special tools — catchers protein. Continue reading
Catfish is a large predator in our waters. His body is long, covered with small scales; the head is huge. In the mouth of small but very sharp teeth. In the upper jaw are a pair of long catfish mustache, and the bottom four UCA is shorter than the upper. Catfish can swallow prey which is sometimes little inferior to him in weight and volume. But most often, his food is bottom-dwelling small fish, crayfish and shellfish.
On sale usually arrives in catfish meat fillets. And cooking catfish recipes has a large number of, ways of cooking different. Mostly we cook at home dishes from the catfish fried in oil or baked in the oven with vegetables. Turns out very tasty catfish dishes that are prepared with fruit or spicy sauce.
Who has not tried catfish meat, does not even suspect, what he delicious meat. Catfish is a large predatory fish, but not many people know that the most delicious meat have fish of small size. And recipes with catfish of large sizes, limited only by meatballs, because a large catfish meat hard. Since ancient times in Russia were popular dishes from the catfish is from the tail of this huge fish, cooked fish cakes, fish pies and pies. In our country, the cooking of catfish has always been considered something special. Continue reading