Actinopterygii (ray-finned fishes) > Acipenseriformes
(Sturgeons and paddlefishes) > Acipenseridae
(Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).
Environment / Climate / Range
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)
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).
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).
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).
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)
Threat to humans
Fisheries: highly commercial; aquaculture: commercial; aquarium: public aquariums
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 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) .