DANGEROUS SEA CREATURES
Edward R. o Ricciuti, ichthyologist-lover, scuba diver, author of several popular science publications, a former employee of the new York Zoological society, introduces readers to marine and river animals and…

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The most dangerous and poisonous animals of Russia
The most dangerous and poisonous animals of Russia live near the person. More than half the population of the Russian Federation living on the territory, inhabited by various the most…

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common

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Som. Fishing for catfish

Com belongs to the family somovyh . This is a very large freshwater fish, which was a legend. Catfish grows so large that there were cases of attacks by these fish to Pets and even humans. Catfish has a cylindrical body of elongated shape. Color catfish can have several shades, depending on the water body in which it dwells. Som can be almost black or light yellow, like burbot. But mostly its color is brownish with a greenish tinge. Inhabits Europe, in the Aral sea basin in the European part of Russia.

The maximum weight of 500 kg;

The maximum length is 6.3 m;

The maximum age is 120 years.

Best spots to catch catfish

The best place catfish certainly are holes. Som loves the cool water and the depth that combine holes on the bottom of the pond. The river, which is found in catfish, do not have virtually any holes that are not hiding this predator. If You can not find the pit on the pond, You should just watch the water. Continue reading

The structure of the pharynx, the feeding of fish.

The structure of the pharynx is also closely linked to feeding habits of fish. As indicated, the number and structure of Gill rakers may be very different — from a few small hard bumps predatory fish to a complex network of frequent rakers in silver carp — Hypophthalmichthys molitrix (Val.), litumelo planktonic algae. The mullets — Mugili – dae — muscular throat adapted for crushing lisovogo clump, consisting of detritus and vegetation. Some fish developed teeth on the pharyngeal bones. Some they are on top – and ninepatch bones, as, for example, wrasses — Labridae, or only ninepatch, as, for example, cyprinids — Cyprinidae.

Haeckel (1843) divides nizhnelomovskie teeth of cyprinid by the nature of the structure related to their function into four types:

1) hollowed — excavati, a type of Longhorn beetle,

2) chewing — mastic torii, a type of carp, Continue reading

Bizarre inhabitants of the deep sea

The film is not loaded and after a long wait gives “video file did not download”?

There are two possible reasons:

1) the Server on which this film is overloaded, try to look a little later.

2) you have no free space on drive C. restart your browser to free up space.

What to do if the movie constantly freezes and waiting for download

There are two possible reasons:

1) the server on which the film is overloaded at the moment (this often happens with new products when they all look the same film);

Click on pause and wait 10-15 minutes, then continue browsing. Continue reading

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Types of aquarium filters
Assuming that novice aquarists often have trouble with choosing the right filter for the aquarium, we present the most popular filter for small and large aquariums. Internal filter Internal filters…

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Great white shark (lat. Carcharodon carcharias)
Great white shark, the heroine of the novel by P. Benchley "Jaws" and the movie of the same name, has a bad reputation as man-eater. Yes, it is the world's…

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