Pseudoscaphirhynchus kaufmanni (Kessler, 1877)
Amu Darya sturgeon
Pseudoscaphirhynchus kaufmanni
photo by Salnikov, V.B.

Family:  Acipenseridae (Sturgeons), subfamily: Acipenserinae
Max. size:  75 cm TL (male/unsexed); max.weight: 2,000.0 g
Environment:  demersal; freshwater; brackish; depth range 1 - 2 m, potamodromous
Distribution:  Asia: Former USSR: Amu Darya River from the Pyandzh to the mouths and lower tributaries. Sometimes in the brackish water of Taldyk Bay, the delta of the Amu Darya in the Aral Sea. Considered close to extinction (Ref. 6866). International trade restricted (CITES II, since 1.4.98; CMS Appendix II). Registered in the 1984 USSR Red Book; 1985 Turkmen SSR Red Data Book; 1996 IUCN Red List; an d1997 CITES Lists (Ref. 35930).
Biology:  Its natural habitat and population have declined due to the breakage of the hydrological regime of the Amu Dariya River. Usual weight not more than 600-700 grams. Females with mature hard roe, very rare. Apparently sensitive to oxygen content in the water, changes in its chemical content, and to pollution. Fishing is prohibited (Ref. 35930). Spawns at 16° C (Ref. 719).
IUCN Red List Status: Critically Endangered (CR); Date assessed: 24 October 2009 (A2c) Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Luna, Susan M. - 26.08.91
Modified by: Torres, Armi G. - 25.07.16
Checked by: Froese, Rainer - 03.02.94

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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