Fifty fish specimen belong to seven species; Acanthobrama marmid, Alburnus mossuleusis, Carasobarbus luteus, Cyprinus carpio, Garra elegans, G. rufa and Planiliza abu were examined. The samples collected from three sites on Tigris River in Baghdad City (Shawaka, ALkraiat ALatefia) during the period May October 2015. Total bacteria count for each of skin gills ranged 50 × 245 51 250 cells / g re...