عنوان مقاله [English]
Spatial and temporal distribution and species composition of sturgeon in Mazandaran province coastal areas of the Caspian Sea waters less than 10 meters deep was studied during 2004-2006 by gill net. Totally 719 sturgeon fish were catch. Persian,Stellate, Russian, Ship sturgeons and Beluga consist of 85.5, 6.4, 5.6, 2.4 and 0.1 percent of Catch composition, respectively. The CPUE were calculated 3.7, 7.53 and 0.75 fish/day/6 gillnets during the three years period from 2004 to 2006, in 24 hours settlement at sea, respectively. Juveniles and young fish were abundant in waters less than 10 meters deep.