Sturgeon science knowledge introduction, taking you to a comprehensive understanding of sturgeon
Fisheries science knowledge - sturgeon
English name: Amur sturgeon
Local name: Seven-grain float
Taxonomic status: Acipenseriformes, Acipenseridae, Acipenser
Morphological characteristics: Body spindle-shaped. Belly flattened. Body covered with five rows of bony plates, one row on the back, and 2 rows each on the sides and ventral sides, with tiny bony granules often present between the rows of bony plates. Mouth located on the ventral surface of the head, tubular and retractable. Lips wrinkled, petal-like, with 2 pairs of barbels in front of the mouth. On the ventral surface of the snout, in front of the barbels, there are seven wart-like protrusions, hence the name Seven-grain float. Tail is heterocercal. Dorsal fin 38~55; anal fin 21~30; dorsal bony plates 11~17; lateral bony plates 32~47; ventral bony plates 7~14. Back is dark brown or grayish brown. Belly is silvery white.
Ecological habits: It is a carnivorous fish; adults feed on aquatic insects, mollusks, and benthic crustaceans. Artificially domesticated Amur sturgeon can eat artificial compound feed. The water temperature for starting feeding is 4°C, and the optimal feeding water temperature is 18~22°C. Sexual maturity at 9~10 years of age, with mature individuals weighing about 6kg.
Geographical distribution: Distributed in the Heilongjiang River system. Introduced to Ningxia in the 1990s.
Economic value: A valuable edible economic fish.
Local name: Seven-grain float
Taxonomic status: Acipenseriformes, Acipenseridae, Acipenser
Morphological characteristics: Body spindle-shaped. Belly flattened. Body covered with five rows of bony plates, one row on the back, and 2 rows each on the sides and ventral sides, with tiny bony granules often present between the rows of bony plates. Mouth located on the ventral surface of the head, tubular and retractable. Lips wrinkled, petal-like, with 2 pairs of barbels in front of the mouth. On the ventral surface of the snout, in front of the barbels, there are seven wart-like protrusions, hence the name Seven-grain float. Tail is heterocercal. Dorsal fin 38~55; anal fin 21~30; dorsal bony plates 11~17; lateral bony plates 32~47; ventral bony plates 7~14. Back is dark brown or grayish brown. Belly is silvery white.
Ecological habits: It is a carnivorous fish; adults feed on aquatic insects, mollusks, and benthic crustaceans. Artificially domesticated Amur sturgeon can eat artificial compound feed. The water temperature for starting feeding is 4°C, and the optimal feeding water temperature is 18~22°C. Sexual maturity at 9~10 years of age, with mature individuals weighing about 6kg.
Geographical distribution: Distributed in the Heilongjiang River system. Introduced to Ningxia in the 1990s.
Economic value: A valuable edible economic fish.