FISH POPULATIONS IN FISHING WATERS IN THE AREA OF FOJNICA MUNICIPALITY

Abstract

The ichthyological research in this study aimed to determine the current state of fish populations and to obtain relevant data on the presence of certain fish species in the fishing waters of the Fojnica municipality. The field part of the ichthyological research in the fishing waters of the Fojnica municipality was conducted in October 2019, in the following watercourses: Fojnička River, Željeznica, Radava, Brložnjak, Dragača, Požarna, Borovnica, Hrastinčica, Kozica, Jezernica and Šćona. The fish were caught with a special-purpose electrofishing generator – model "Honda" OHV 5.5 (with a power of 3.0 kW). Collected fish samples were processed on-site, and all individuals were then returned to the watercourse from which they were caught. The ichthyological research in the fishing waters of the Fojnica municipality recorded 9 fish species from four families of freshwater ichthyofauna. Systematic determination revealed that the Salmonidae family is represented by 4 registered species (44.44%), while the Leuciscidae family is represented by 3 species (33.33%). The families Cyprinidae and Cottidae are represented with one registered species each (11.11%). Based on the analysis of the results from field research conducted at representative localities of the aforementioned watercourses, it can be concluded that the ecological conditions and the quantitative-qualitative composition of ichthyopopulations are at a satisfactory level for all indigenous fish species.