Pseudoscaphirhynchus fedtschenkoi Kessler, 1872

Syr Darya sturgeon, Syr-darya shovelnose sturgeon



Taxonomy & Nomenclature

Synonym/s: Scaphirhynchus fedtschenkoi, Kessler 1872


Conservation Status


Last record: 1986

IUCN RedList status: Critically Endangered


The IUCN states that this species was last recorded in the 1960's (Mugue, 2010). However, Kamilov and Urchinov (1995) report that:

"One specimen of Syr-Darya shovelnose was captured in 1986 from the lower course of the Keles River (Syr-Darya catchment)".

Thus the last record of this species is 1986, if not more recent again on account of the fact that not all captures of this species could be expected to be reported to authorities for recording.



Syr Darya basin, Aral Sea (Kazakhstan, Tajikistan and Uzbekistan)












Original scientific description:

Kessler, K. F. (1872). On a remarkable fish of the family of sturgeons discovered by A. P. Fedtschenko in the Syr Darya River. Izvestiya Obschestva Lyubitelei Estestvoznaniya, Antropologii i Etnografii 10: 70-76. [in Russian]


Other references:

Birstein, V. J. (1997). Threatened fishes of the world: Pseudoscaphirhynchus spp. (Acipenseridae). Environmental Biology of Fishes 48: 381-383..

Kamilov, G. and Urchinov, Z. U. (1995). Fish and fisheries in Uzbekistan under the impact of irrigated agriculture, p. 10-41. In: T. Petr (ed.). Inland fisheries under the impact of irrigated agriculture: Central Asia. FAO Fisheries Circular No. 894.

Kessler, K. F. (1873). On a remarkable fish of the family of sturgeons discovered by M. A. P. Fedtschenko in the River Suir-Dar. Ann. Mag. Nat. Hist. Ser. 4: 12: 269-276.

Kuhajda, B.R., R.L. Mayden, V.B. Salnikov and V.J. Birstein. (2000). Examination of intraspecific variation and life history characteristics of Pseudoscaphirhynchus kaufmanni and P. hermanni (Actinopterygii, Acipenseridae), central Asian sturgeon endemic to the Amu Darya River, p. 223-224. In: Program book and abstracts. Joint (80th) meeting of the American Society of Ichthyologists and Herpatologists (ASIH), American Elasmobranch Society (AES), Herpatologists League (HL), Neotropical Ichthyological Assoc. (NIA), SSAR, CAH.

Mugue, N. (2010). Pseudoscaphirhynchus fedtschenkoi. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.1. ( Downloaded on 23 September 2012.

Nedoluzhko, A. V. et al. (2020). Molecular phylogeny of one extinct and two critically endangered Central Asian sturgeon species (genus Pseudoscaphirhynchus) based on their mitochondrial genomes. Sci Rep. 10(1): 722. [Abstract]

Zholdasova, I. (1997). Sturgeons and the Aral Sea ecological catastrophe. Environmental Biology of Fishes 48: 373-380. [Abstract]


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