To care for a marine aquarium is much more difficult than freshwater. The reason for this is that in nature, fish have evolved in relatively constant conditions of environment. Therefore, a change in vital parameters is allowed in a very small range. Beginners rarely have marine aquariums: not just for complex care, but because of the high cost of equipment and their inhabitants.
However, if you really want to have a home to beautiful tropical fish, take a chance and make a saltwater aquarium is definitely worth it. It can be of three types: only with fish, plants and invertebrates, and finally with all together. Easiest way to take care of the first type, since all terms are calculated only for fish. Proper starting of the aquarium can considerably facilitate subsequent maintenance and to get rid of many problems.
Before starting the ground is Packed by size fractions: large pebbles on the filter or the bottom of the aquarium, then a special coating, which is poured fine sand. You can use coral skeletons, natural or artificial; decorative purposes often use a neutral rock. Continue reading
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
Thus, the spawning period is defined more clearly than most tropical species, for which the importance is not so much the temperature, the amount of rainfall.
You can determine the start time of spawning, regularly measuring the temperature of the water in the pond, because the spawning usually begins at a temperature of about 20°C. At this temperature the eggs develop normally. Plus or minus 5 °C, and the fry will be deformed, because things will develop too quickly or too slowly.
Physical changes in the fish also indicate the approach of spawning. For example, the males of the family Cyprinidae appear white swellings, called tubercles. Fish such as Orfe, Rudd, goldfish and koi, the tubercles appearing on the Gill covers and pectoral fins, while Cipriani – along the scalp.
Some fishes, such as sticklebacks, coloring of the male becomes brighter, attracting mates and scaring off rivals. Females of all cold-water species become fuller males. Continue reading