The present study was designed to investigate the occurrence of _Listeria spp._in two of economically important freshwater fish species namely _Oreochromisniloticus_ (tilapia) and _Clariasgariepinus_ which were collected from commercial fish markets in Assiut, also to explore the efficiency of five ice formulations : tab water ice (control),three ices sanitized using trisodium phosphate(TSP) 2.5%,5% and 10% in addition to an ice ... إقراء المزيد