The present work was conducted to evaluate effect of five types of fruits (guava - apples - mango - citrus - pomegranate) on the Mediterranean fruit fly (Medfly), Ceratitis capitata (Wied.) and the peach fruit fly (PFF) Bactrocera zonata (Saunders) at the immature stages under laboratory conditions. Both species of fruit flies were insignificantly equal with those of the mixed individuals on certain biological aspects (pupation%, pupal mortality%, emerged flies%, mean number of emerge males and females, sex ratio as emerged males%), except for mango and pomegranate fruits pupation (%) of  PFF recorded high significantly 93.3 and 81.3%, respectively. Also, in pomegranate fruits emerged flies (%) of PFF gave high significantly 81.3% and mean of emerged females in mango fruits 50.7. Medfly recorded the shortest larval and pupal duration in all tested hosts. So, it can be concluded that infection of orchards with Medfly in the tested host fruits must be calls faster control practices (partial spray) required due to the shortest larval and pupal duration of Medfly.