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The sterlet (Acipenser ruthenus in Linnaeus' classification) is the last of the five native sturgeon species inhabiting the Middle and Upper Danube River. Its population has dropped significantly, mainly due to the degradation of main habitats, spawning grounds and foraging grounds.
Acipenser ruthenus Linnaeus, 1758 ; Acipenser schrenckii J. F. Brandt, 1869 (Japanese sturgeon) Acipenser sinensis J. E. Gray, 1835 (Chinese sturgeon) Acipenser stellatus Pallas, 1771 (Starry sturgeon) Acipenser sturio Linnaeus, 1758 (European sea sturgeon) †Acipenser toliapicus Agassiz 1844 ex Woodward 1889
The oldest known paddlefish is Protopsephurus from the Early Cretaceous of China around 120 million years ago, [14] while the earliest known sturgeons appear in the Late Cretaceous in North America and Asia, around 100–95 million years ago.
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.
A rare type of caviar known as Imperial Caviar, from the Sterlet sturgeon (Acipenser ruthenus), a now nearly extinct species of sturgeon from the Caspian Sea, [3] is sometimes incorrectly labeled as Sevruga, as well as the even rarer Golden Caviar from the albino Sterlet, the caviar being yellow in color.
In July 2016, Sturgeon Aquafarms in Bascom, Florida, became the first and only facility in the world to obtain a permit exemption for the sale of beluga sturgeon and its caviar in the U.S. [citation needed] Since 2017, the company has assisted in beluga sturgeon repopulation efforts across the world by providing over 160,000 fertilized eggs to ...
White sturgeon (Acipenser transmontanus) is a species of sturgeon in the family Acipenseridae of the order Acipenseriformes. They are an anadromous (migratory) fish species ranging in the Eastern Pacific; from the Gulf of Alaska to Monterey, California .
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