Salted sun-dried samples of the flesh of three different species of fish with different levels of salt in the flesh were exposed to infestation by the mite Suidasia medanensis in the laboratory under uniform conditions. Statistical analysis of the results obtained after one week s exposure showed that there is no correlation between the level of salt retained in the flesh and the number of mites infesting it. It would appear, however, from the results that there may well be a critical level of salt content above which infestation does not occur .