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
In the seas and oceans of our planet are populated with over 21000 species of fish. About ten percent of them belong to the industrial types. Breeding allows you to obtain not only the fish as a commodity, it is the raw material for the production of medicines, fertilizers, pet food. Industrial fish are divided into freshwater and marine.
Freshwater species are fish that inhabit the ponds, lakes, rivers. The main industrial freshwater fish species are catfish, carp, perch. To artificial breeding of well adapted to black bass, trout, carp, Amur, silver carp. Such kinds of fish as pike, perch, catfish, carp, crucian carp, bream, take the first place in terms of industrial production in our country.
Particularly valuable of freshwater species of fish are:
sturgeon and stellate sturgeon, Beluga, sturgeon, this species of fish has a very tasty and fatty meat, and from them collect valuable Beluga caviar;
salmon – humpback salmon, chum salmon, Steelhead, these fish species are given, in addition to high demand of red caviar, delicious meat. Continue reading
What can make the pond really alive? Of course fish. One watching them calms the nervous system and gives confidence. Over time, these cute and harmless creatures get used to and even master that will take food out of his hands, but at first it is necessary for them to create certain conditions.
Sufficient volume of the pond, appropriate landscaping, night aeration, and if necessary filtering the main conditions for comfortable living of fish. The compatibility of different species and the overpopulation of fish equally important detail that should be considered. Please be aware that on 30 cm long fish requires a minimum of 1000 l of water. Sufficient depth of the pond would provide fish a safe winter. With a lack of aquatic vegetation would require powerful filtration. Continue reading