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The bastard sturgeon, fringebarbel sturgeon, ship sturgeon, spiny sturgeon, or thorn sturgeon (Acipenser nudiventris) is a species of fish in the family Acipenseridae. Formerly abundant in the Black, Aral and Caspian seas, its range is now primarily limited to the Ural River (in Russia and Kazakhstan), with a possible relict populations in the Rioni River in Georgia and the Safid Rud in Iran. The healthiest population is one in Lake Balkhash in Kazakhstan, well outside its natural range, where they were introduced in the 1960s for commercial purposes. It has been reported that this fish has the highest relative fecundity for any sturgeon species.

Bastard sturgeon
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Acipenseriformes
Family: Acipenseridae
Genus: Acipenser
A. nudiventris
Binomial name
Acipenser nudiventris
  • Acipenser schypus Güldenstädt 1772 ex Bonnaterre 1788
  • Acipenser turritus Fitzinger & Heckel 1836
  • Acipenser glaber Fitzinger 1836
  • Lioniscus glaber (Fitzinger 1836)
  • Acipenser nudiventris derjavini Borzenko 1950
  • Acipenser shipus Lovetzky 1834 non Güldenstädt 1772
  • Euacipenser nudiventris (Lovetsky 1828)


  1. ^ Froese, R.; Pauly, D. (2017). "Acipenseridae". FishBase version (02/2017). Retrieved 18 May 2017.
  2. ^ "Acipenseridae" (PDF). Deeplyfish- fishes of the world. Retrieved 18 May 2017.