Preliminary Results of the Research of the Population of Tench (Tinca Tinca) in the Water Ecosystems of Serbia

Abstract

A tench (Tinca tinca) is an important fishing species in the mainland water ecosystems. In the geographical sense, it’s characterised as a broadly diffused Euro-Asian species (and was also induced into the water ecosystems of the north and south Africa, north America, Tasmania, Australia, New Zealand, India and Chile). Regardless to the wide geographic diffusion , literature emphasis the endangerement of this species of fish at the level of the local populations, before all because of engeneering works on rivers. (K o t t e l a t & F r e y h o v 2007). Researches of the population of the tench in the water ecosystems of Serbia indicate a significant lowering of natural populations in the part of Serbia south of the Sava and the Danube, and that the measures of conservation and repopulation are necessary, to enable a long-term protection of this important species of fish.