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Pseudoscaphirhynchus kaufmanni (Kessler, 1874)
AMU DARYA STURGEON
Life   Vertebrata   Fish   Acipenseridae   Pseudoscaphirhynchus


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Pseudoscaphirhynchus kaufmanni, Amu Darya sturgeon : fisheries
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Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Pseudoscaphirhynchus kaufmanni (Kessler 1877)

Amu Darya sturgeon Upload your photos  and  videos
Pictures | Stamps, Coins Misc. | Google image Image of Pseudoscaphirhynchus kaufmanni (Amu Darya sturgeon) Pseudoscaphirhynchus kaufmanni
Picture by Salnikov, V.B.

Classification / Names Common names | Synonyms | Catalog of Fishes ( gen. , sp. ) | ITIS | CoL | WoRMS | Cloffa

Actinopteri (ray-finned fishes) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Pseudoscaphirhynchus: Greek, pseudes = false + Greek, skaphe = boat + Greek, rhyngchos = snout (Ref. 45335 ) .

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; brackish; demersal; potamodromous (Ref. 51243 ); depth range 1 - 2 m (Ref. 109751 ).   Temperate; 10°C - 20°C (Ref. 2059 )

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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 ).

Length at first maturity / Size / Weight / Age

Maturity: L m 45.0   range ? - ? cm
Max length : 75.0 cm TL male/unsexed; (Ref. 593 ); max. published weight: 2.0 kg (Ref. 593 )

Biology     Glossary (e.g. epibenthic)

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 ).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Berg, L.S. , 1962. Freshwater fishes of the U.S.S.R. and adjacent countries. volume 1, 4th edition. Israel Program for Scientific Translations Ltd, Jerusalem. (Russian version published 1948). (Ref. 593 )

IUCN Red List Status (Ref. 123251 )

  Critically Endangered (CR)  (A2c); Date assessed: 24 October 2009

CITES (Ref. 123416 )

Appendix II: International trade monitored

CMS (Ref. 116361 )

Appendix II: Migratory species conserved through agreements

Threat to humans

  Harmless




Human uses

Fisheries: commercial FAO(fisheries: species profile ; publication : search ) | FishSource |

More information

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Common names
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Download XML

Summary page | Point data | Common names | Photos

Internet sources

Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes ( gen. , sp. ) | DiscoverLife | ECOTOX | Faunafri | Fishipedia | Fishtrace | GenBank( genome , nucleotide ) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia( Go , Search ) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00324 (0.00145 - 0.00723), b=3.17 (2.98 - 3.36), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic level (Ref. 69278 ):  3.4   ±0.3 se; based on diet studies. Generation time: 6.7 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. Resilience (Ref. 120179 ):  Low, minimum population doubling time 4.5 - 14 years (K=0.16; tm=6-7). Vulnerability (Ref. 59153 ):  High vulnerability (55 of 100) . Price category (Ref. 80766 ):   Unknown .

Entered by Luna, Susan M. Modified by Torres, Armi G. Fish Forum
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