We investigated the growth, survival, and reproduction performance of rainbow trout (Oncorhynchus mykiss) fed 5% fish meal diets (ELFM group) from the juvenile stage to the 3-year-old mature stage. Fish in the control group were fed approximately 50% fish meal diets (FM group). The growth of the ELFM group was significantly inferior to the FM group. However, survival rates and egg quality parameters were not significantly different between groups. Thus, a 5% fish meal diet could be used in almost all stages of rainbow trout farming and reproduction for selective breeding.
