| Acipenseridae (Sturgeons), subfamily: Acipenserinae |
| 200 cm TL (male/unsexed); max.weight: 210 kg; max. reported age: 63 years |
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demersal; freshwater; brackish; pH range: 7 - 7.5; dH range: 20; depth range 0 - 200 m, potamodromous |
| Asia: Siberia, rivers Ob, Irtysh, Yenisei, Lena, Kolyma, Khatanga, Pyasina, Anabar, Olenyok, Yana and Lake Baikal (Ref. 57765). Non-migratory populations exist in all river systems (Ref. 57765). |
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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). |
| Found in deep and shallow parts of rivers, with moderate to swift current usually at depths of 1 to 8 m (Ref. 57765). Adults live essentially in freshwater although some fish frequently occur in estuaries. Males are sexually mature between 9 and 29 years; females between 9 and 34 years (Ref. 57765). Spawn in main river channel over stone-gravel or gravel-sand bottom and with strong current (Ref. 59043). |
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Critically Endangered (CR); Date assessed: 14 September 2019 (A2bd) Ref. (130435)
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| harmless |
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Found in the Siberian rivers from the Ob to Kolyma, in Lake Baikal, and rarely in the Pechora (Ref. 26334). Known as Acipenser baerii stenorrhynchus from River Yenisei, River Lena and east Siberian rivers (Ref. 12255). This has been translocated to areas for aquaculture and stocking in open waters within the country. However, it failed to establish populations in areas where it has been transplanted to (Ref. 45022) such as in the Volga River drainage (Ref. 58297). Endangered in the Indigirka river. Also Ref. 6866, 43202. nEurRus |
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