Directory of commercial fish
Centrolophidae - Stromateidae – Perciformes Seriolella porosa, Seriolella punctata Silver warehou, Savorin length: 67 cm; weight: 3 kg (average 500g); the production season: in bycatch, almost all year round. Habitat…

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How fish breathes?
Hundreds of thousands of years ago, long before the appearance on Earth of man, the oceans already swam fish. At that time they were the most highly developed creatures. Since…

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Aquarium fish
When it comes to buying a pet, people often forget about aquarium fish. And for good reason, because it's a very aesthetic animals can teach responsibility because they require a…

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An aquarium of 50 liters

Aquarium (lat. aquarium ) — transparent container for permanent keeping of aquatic organisms.

It typically refers to a home aquarium (room) aquarium for keeping fish aquarium in home; for technical reasons, the maximum volume of such a tank is usually less than one cubic meter. Public aquariums . intended for demonstration to the audience of aquatic flora and fauna existing in the structure of zoos or as separate spectacular educational institutions can exceed 3000 m3 in volume. The world’s largest capacity for the housing of inhabitants of sea is in the amusement Park Chime-Long Ocean Kingdom [en] in the Chinese city of Zhuhai. According to the Guinness Book of records. it is the volume of 22.7 million liters (22,7 thousand m3). This aquarium also has the largest area of the panel made of Plexiglas (39,6 x 8.3 m) and has no analogues in the world underwater hall with a diameter of 12 m.

To maintain the biological balance in the aquarium used a variety of tools: aerators, mechanical and biological filters. thermostats. thermometers and much more. Description simulation of the ecosystem in an enclosed artificial pond and various aspects of breeding fish deals aquarium .

Distinguish from aquariums terrariums. paludarium and aquaterrariums.for the maintenance of terrestrial and wetland animals and plants.

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Dimensions of aquariums

The size of the aquariums can vary in a wide range: from one to several thousand liters. Different species have different requirements for sizes of aquariums. Clear requirements for the minimum size, but there are a number of recommendations. For example, fish that are able to move very quickly and in nature they live in fast flowing rivers, require aquariums of large dimensions — approximately 10 times greater than the length of the body. Such fishes as stingrays. requires an aquarium with a large surface area of the bottom, fish the most important parameter of the tank can be depth. Some fish, however, very unpretentious — for example, chickens can live in tanks ranging in size from 0.5 liters.

Herring
Typical representatives of the nekton is the herring. It is well known that this fish has great commercial value. Until comparatively recently, it was promyshlyali in such large quantities that…

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Fish of the Black sea
Katran - black (Squalus acanthias ponticus) Reaches a body length of 2 m (usually 1.5 m). Found only in the Black sea waters to depths of 60 m. Attention. All…

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