General characteristics and life cycle of sturgeon
General specifications of sturgeon
The appearance of the sturgeon is such that it is proportional to the rapid swimming and movement of these fishes at relatively high depths. The body is long and gradually narrows from head to tail. The body is covered by five rows of bony bones, one row behind and two rows laterally and two rows below the abdomen. In the distance between the bony rows, beautiful motifs and stars look like. The color of these fish varies between black, gray, white and yellow. Mostly white and completely black are also found in most sturgeon. These fish have a pair of caudal fins and a pair of ventral fins, as well as an anterior fin and a dorsal fin, and the caudal fin is of heteroskuric type, the first radius of the pectoral fin. Age determination is used. The body is bare and scaleless, with the upper crescent of the tail showing a ganoid or loose tail. The head is compressed to a small size from top to bottom.
Slide one
Slide Two
Slide Three
Sturgeon life cycle
All sturgeon species spawn and reproduce in freshwater. Some migrate to freshwater, some to saltwater. Three forms of the life cycle are recognizable in sturgeon. Species such as Sterlet and Dauricus Schrenckii survive in freshwater, lakes and rivers in eastern Europe and China, as larvae, fish, and adults.
Adult fish migrate to estuaries and brackish waters after spawning. For example, Siberian sturgeon migrate to the Katanga River. Adult fish migrate to the river and return to the sea after spawning. The larvae migrate to the sea after growing up in the nors stage and remain in the sea until puberty. For example, all Caspian sturgeon are of this type. The larvae migrate to the sea after growing up in the infant stage and remain in the sea until puberty. For example, all Caspian sturgeon are of this type.