The inhabitant of sea depths told the researchers about the secrets of immortality
The tiny freshwater polyp Hydra long been of great interest to scientists. In many respects it is connected with the fact that this animal is actually immortal and shows no…

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How do you sleep aquarium fish?
Watching fish in an aquarium, you'd think they never rest or sleep. In the understanding of man, they are in constant motion. However, like all animals, fish periods of active…

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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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Marine aquariums

Marine aquariums can be divided into several types, depending on the animals that inhabit coral reef, fish, mixed and thematic.

Of course, the most memorable and prestigious, but at the same time, the most difficult to maintain coral reef .

The reef can be represented by soft or hard corals. In addition corals in the reef there are sea anemones, anemones, and many other subjects, including it might as well be fish, but usually small, inconspicuous and completely in a small amount.

Under natural conditions, the corals are in perfectly clean water, so we need to take seriously the issue of water quality, to reproduce and maintain the same properties of the built environment in a marine aquarium. In addition to special complex filtering system, the so-called “living stones” perfectly fulfill the role of water purification, both as a design element and substrate for corals. Another important focus in the marine aquarium – quality and correctly chosen spectrum lighting. Continue reading

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 its price was very low, despite excellent taste and nutritional quality. In recent years, due to the sharp increase of the fishing fleet and introduction of intensive methods of production occurred overfishing. The number of herring in the oceans have decreased dramatically.

If in the future the intensity of the herring fishery will increase or even remain at current levels in the coming years, this valuable food fish will become a Museum rarity. Reduction of stocks of herring and concerned consumers and fishermen, but the first sounded the alarm scientists.

The appearance of the herring is well known to everyone, but it is unlikely that the layman can easily distinguish one kind of herring from another: the difference between them for the untrained eye to be insignificant. Species differences are not only in the details of the structure and the size of the fish, much deeper than they differ from each other in biology, numbers, distribution. Therefore, the fishery for mackerel fishes should be strictly subordinated to scientific data, to each type needs special approach. Continue reading

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 kinds of old-fashioned recourses are at the base of the dorsal fin spines small venom glands. When you shot the venom and mucus enter the blood stream and cause local poisoning, often accompanied by severe pain and inflammation.

The naked body is olive-brown above and whitish below. Leads benthic lifestyle, often buries itself in mud and sand. The predator, eats fish. Viviparous species. Body length is more than 1.8 m, weight about 20 kg. In our waters common in coastal areas of the Black and the southern part of the Azov sea common to the coast of Europe to England. The stingrays are very dangerous in water and outside of it (caught the bait, etc.) because they can cause serious injury to the poisoned needle. Known cases ended disability and even death of victims. Continue reading

Habitat Black Marlin
This type of Marlin lives in the tropical latitudes of the Indian and Pacific oceans. Marlin fish is pelagic, i.e., living in the water column. Black Marlin prefers to stay…

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IDE is the most beautiful fish
IDE – fish of large, medium length up to half a metre, but specimens up to 70 cm in length. The weight of the IDE is 2-3 kg, individual fish…

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