Acipenser baerii Brandt, 1869
Siberian sturgeon
photo by Hartl, A.

Family:  Acipenseridae (Sturgeons), subfamily: Acipenserinae
Max. size:  200 cm TL (male/unsexed); max.weight: 210 kg; max. reported age: 63 years
Environment:  demersal; pH range: 7 - 7.5; dH range: 20; depth range 0 - 200 m, potamodromous
Distribution:  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).
Diagnosis:  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).
Biology:  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).
IUCN Red List Status: Endangered (EN); Date assessed: 24 October 2009 (A2bcd+4bcd) Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Luna, Susan M. - 24.10.91
Modified by: Luna, Susan M. - 24.03.15
Checked by: Ruban, Georgii - 26.02.14

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 Not for publication.


Page created by Jen, 05.08.02, php script by kbanasihan 06/09/2010 ,  last modified by sortiz, 10/02/17