Acipenser baerii  Brandt, 1869

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

Actinopterygii (ray-finned fishes) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).

Environment / Climate / Range Ecology

Marine; freshwater; brackish; demersal; pH range: 7.0 - 7.5; dH range: ? - 20; anadromous (Ref. 51243); depth range 20 - 150 m (Ref. 93286), usually 20 - 50 m (Ref. 93286).   Temperate; 10°C - 20°C (Ref. 2059); 74°N - 46°N, 64°E - 162°E

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 85 - 90 cm
Max length : 200 cm TL male/unsexed; (Ref. 40476); max. published weight: 210.0 kg (Ref. 59043); max. reported age: 60 years (Ref. 52333)

Short description Morphology | Morphometrics

Extended snouts; four barbels in front of the mouth (Ref. 4639). The back is light grey to dark brown colored. The belly color varies from white to clear yellow. Five row s of scutes: 10-19D, 32-59L, 7-16V. Small star-like scutes between the main ones. Clearly slit inferior lip (Ref. 40476).

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

Asia: Siberia, rivers Ob, Irtysh, Yenisei, Lena, Kolyma. Some non-migratory populations exist in the Irtysh River system. International trade restricted (CITES Appendix II, since 1.4.1998).

Biology     Glossary (e.g. epibenthic)

Found in deep parts of large rivers, with moderate to swift current (Ref. 59043). Adults live essentially in freshwater although some fish frequently occur in estuaries. Males are sexually mature between 9-15 years; females between 16-20 years (Ref. 11941). Spawn in main river channel over stone-gravel or gravel-sand bottom and with strong current (Ref. 59043).

Main reference Upload your references | References | Coordinator | Collaborators

Baillie, J. and B. Groombridge (eds.), 1996. 1996 IUCN red list of threatened animals. IUCN, Gland, Switzerland. 378 p.

IUCN Red List Status (Ref. 90363)

  Endangered (EN) (A2bcd+4bcd)

Threat to humans

  Harmless




Human uses

Fisheries: highly commercial; aquaculture: commercial; aquarium: public aquariums
FAO(Aquaculture: production, species profile; fisheries: species profile; publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00251 (0.00147 - 0.00429), b=3.30 (3.15 - 3.45), based on LWR estimates for species & Genus-BS (Ref. 93245).
Trophic Level (Ref. 69278):  3.2   ±0.38 se; Based on food items.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (tm=11-17; tmax=60).
Vulnerability (Ref. 59153):  Very high vulnerability (84 of 100) .
Price category (Ref. 80766):   Unknown.