3.3. Survival rate and cumulative mortality In infected fish fed with 5% and 10% R. apiculata enriched diets the survival rate was higher (85% and 80%); it declined to 65%, with 1% diet. However, the cumulative mortality was the minimum (10%) in
infected fish fed with basal control diet (Fig. 10). Similarly, a low cumulative mortality of 15% and 20% was observed when fed with 5% or 10% supplementation diets. The infected un-treated group suffered a high cumulative mortality of 90%, while the un-infected group fed with control basal diet did not suffer mortality (Fig. 11).