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[50] [51] [52] Some species of sturgeon are extinct, and several are on the verge of extinction, including the Chinese sturgeon, [53] the highly prized beluga sturgeon, [54] and the Alabama sturgeon. [55] Many species are classified as threatened or endangered, with noticeable declines in sturgeon populations as the demand for caviar increases.
Scaphirhynchus is a genus of sturgeons native to North America. All species in this genus are considered to be threatened with extinction or worse. [2] [3] [4] As of 2023, the pallid sturgeon (S. albus) [3] and the Alabama sturgeon (S. suttkusi) [4] are critically endangered according to the International Union for Conservation of Nature.
The largest species, P. kaufmanni, reaches up to 75 cm (30 in) in total length (excluding tail filament), while the smallest, P. hermanni, only reaches 27.5 cm (10.8 in), making it the smallest member of the sturgeon family. [4] [9] P. kaufmanni has a long thin tail filament, P. hermanni lacks it, and it can be long or short in P. fedtschenkoi. [9]
The European sea sturgeon (Acipenser sturio), also known as the Atlantic sturgeon or common sturgeon, is a species of sturgeon native to Europe. It was formerly abundant, being found in coastal habitats all over Europe. [5] Most specifically, they reach the Black and Baltic Sea. [6] It is anadromous and breeds in rivers.
Acipenser is a genus of sturgeons.With 17 living species (others are only known from fossil remains), it is the largest genus in the order Acipenseriformes.The genus is paraphyletic, containing all sturgeons that do not belong to Huso, Scaphirhynchus, or Pseudoscaphirhynchus, with many species more closely related to the other three genera than they are to other species of Acipenser.
The Siberian sturgeon (Acipenser baerii) is a species of sturgeon in the family Acipenseridae. It is most present in all of the major Siberian river basins that drain northward into the Kara , Laptev and East Siberian Seas , including the Ob , Yenisei (which drains Lake Baikal via the Angara River ) Lena , and Kolyma Rivers .
The Alabama sturgeon (Scaphirhynchus suttkusi) is a species of sturgeon native to the United States of America and now only believed to exist in 130 miles (210 km) of the lower Alabama River. [5] Its historical ranges were believed to be over 1600 rkm and included the Tombigbee, Alabama, Mobile, Tensaw, Black Warrior, Cahaba, Coosa, and ...
The flesh of the sturgeon is widely considered a delicacy, especially smoked sturgeon. Poaching of the shovelnose sturgeon is becoming a problem, as they must be 8–10 years old before spawning can occur, and females do not become gravid every year. There has some interest in marketing the shovelnose sturgeon as an aquarium species. [7]