It is the largest fish found in fresh waters, since in some cases it reaches a length of several meters and a weight of up to 1120 1280 even, and in the old days more than 1600 kg.
In addition to size, the Beluga is easily distinguished from all other sturgeon species by its thick cylindrical body and short pointed nose, which is somewhat transparent, since it is not covered by scutellum ivory; her mouth is huge, takes up the entire width of the head and is surrounded by a thick lip; the whiskers are distinguishable by their width and grab to his mouth. In addition, the bone on the head and scutellum bugs, especially lateral and ventral, appear to be relatively little developed: the dorsal is mostly 12-13, 40-45 lateral and ventral 10-12. General body color ash gray, the abdomen is grayish-white, yellowish nose.
Caspian and Black seas with rivers flowing into them, are almost the only stay of this giant fresh water, which, thus, is exclusively our heritage. Continue reading
The body of the stingrays has a distinctive flattened in dorso-ventral direction slightly rhombic shape, the tail is elongated, 1.5 times the disk, armed with a long serrated spine. Anal fin not. From the top, just behind the eyes are spiracles — breathing holes of the gills necessary for respiration has buried in the sand slope.
The mouth is on the bottom, flat teeth allow them to crush mollusk shells and crab shells. The body is naked, not covered with spines or scales, top gray or olive-brown, bottom light. Maximum width of drive (without fins) is about 60 cm in length can reach 2 m (marked in specimens 2.5 m), and weight — 22 kg. However, usually there are individuals width up to 45 cm.
Inhabits the Eastern Atlantic from the Western Baltic to South Africa, including the Mediterranean and the Black sea, also comes in Azov. Normal in the Black sea along the shores in silty and sandy ground; rocky substrates avoids. Continue reading