During sanitation-inspections of 23 breaded-fish processors, 573 finished product units and 604 line samples were collected and analyzed bacteriologically. Data for finished product units processed on the same data are presented in groups; most of the groups consisted of 10 units. Groups of frozen, raw-breaded fish produced under good and poor conditions of sanitation were studied. No more than 20% of the units in each group produced under good conditions of sanitation were positive for Escherichia coli or coagulase-positive staphylococci. Groups of frozen, fried-breaded fish produced under good and poor sanitary conditions were also studied. No more than 10% of the units in each good-sanitation group were positive for E. coli or coagulase-positive staphylococci. However, approximately 30% of the groups processed under poor sanitary conditions also did not exceed these viable bacterial counts because of the lethal effect of the terminal fry to which the product is subjected. It was found that line samples collected from the processing lines reflected the sanitary conditions of the plant and provided bacteriological support for inspectional evidence of plant insanitation.