September 16 (SeeNews) - The main equity indices of the Zagreb Stock Exchange (ZSE) ended fractionally lower on Thursday amid losses in hotel operators Arena Hospitality [ZSE:ARNT] and Riviera Porec [ZSE:RIVP] and fast moving consumer goods distributor Atlantic Grupa [ZSE:ATGR], as food and pharmaceuticals producer Podravka [ZSE:PORD] was in the investors' spotlight, bourse data showed.