List of frequency studies for Silurus asotus
Locality Year
from - to
Sex Gear Frequency type
Amur River off Elabuga, Russia 1947 - 1947 unsexed/mixed  gillnets  absolute number measured 
Bolon Lake, Russia 1945 - 1948 unsexed/mixed  gillnets  absolute number measured 
Upper Amur River, Russia 1948 - 1948 unsexed/mixed  gillnets  absolute number measured 
Ussuri River and Khanka Lake, Russia 1949 - 1949 unsexed/mixed  gillnets  absolute number measured 
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