The habitats preferred by the tench are characteristically sheltered and shallow with abundant vegetation. Two typical habitats were selected: a river branch and a lake where this cyprinid is abundant. With the aims to understand the relationship between tench food and the macroinvertebrate community and to detect the possible feeding differences between the two populations studied throughout the year, samplings were carried out seasonally and the physico-chemical characteristics of the water and the abundance and biomass of the macroinvertebrates were analyzed. Tench were caught by electro-fishing in order to examine gut contents. Chironomid larvae are the preferential prey in both habitats. Also preferential are the gastropods in the river branch and small crustaceans in the lake. The results obtained suggest that tench is a rather unselective, generalist predator on the invertebrate community.