The manuscript is written in a clear and simple style, and the terminological and technical processing of the work is at a high level. The images and tables are adequately embedded in the text of the manuscript. This manuscript is an original work and was created as a result of research by the author. In it, the biodiversity and longitudinal distribution of the macroinvertebrate of the lake Modrac basin was investigated, which gives it a special significance. The manuscript of Isat Skenderovi¿, entitled "BIODIVERSITY AND LONGITUDINAL DISTRIBUTION OF MACROZOOBENTHOS IN THE STREAMS AND RIVERS OF THE MODRAC LAKE BASIN (BOSNIA AND HERZEGOVINA)", is based on the principles of contemporary science, it is clear, methodically adapted and understandable and fully meets all the requirements of the scientific and teaching literature. The manuscript is based on the results of modern research and achievements in the field of zoology, ecology and biodiversity, and the results obtained have fundamental, biological and applicative significance, and are based on a detailed analysis of the biodiversity of the macrozoobenthos basin of the lake Modrac.