In the laboratory of hydrobiology of LLP «Fisheries Research and Production Center» on the basis of the patent (authors Zh. O. Mazhibaeva, head of the hydrobiology laboratory and A.I. Kim, head of the complex laboratory of the West Kazakhstan branch) a working model of an improved hydrobiological bimetral for catching bottom and benthic organisms was produced. Manufacturing of the net for the new (modified) hydrobiological collecting tool was carried out by senior researcher L.A. Kovalyova.

Tests of beamtral in shallow and deep-water zone of Kapshagai reservoir, conducted on 26 July by the staff of laboratories of hydrobiology (Mazhibaeva J.O. and Kovaleva L.A.) and ichthyologists of Kapshagai expeditionary group, showed that the device allows to catch both non-benthic invertebrates and juvenile fish.

Reduced dimensions of the model (as compared to the traditional version of the beamtral trawl) allow to use the beamtral in shallow waters for hand trawling, which provides an opportunity to take into account the development of bocoplaves confined to coastal areas of water bodies.