Fishing was the main occupation and the most important type of labor activity of Pustozersk residents, which provided not only food but also monetary income. First of all, they went fishing for salmon, whitefish and omul in the Pechora River bay and mouth. Nets, seines fishing and drag nets were used to catch fish. The floats for them were made of birch bark, sinkers were made of stone, bone or birch bark stuffed inside with stones. Pustozersk residents tried to collect these stones in "happy places" where they managed to get a rich catch.
Kibas (Nizhnepech. gruzivo, kebat, kibat, kibatok) is a sinker tied to the lower string of a seine. In the Pustozersk Museum-Reserve, there is a kibas found in the archaeological excavations of the Pustozersk Settlement in 2013. The kibas is made of bone in the shape of a triangle with two holes for lashing.
Except for its purely practical purpose, the kibas served the northern peoples as a kind of "happy horseshoe". It was not only taken on a fishing trip but also hung on the wall in fishing huts as an amulet bringing good luck and a rich haul. They also presented kibases to friends as a symbolic wish of the strongest northern health.