Dietary supplementation with inulin had a positive effect on growth responses, including final weight and SGR, in juvenile Nile tilapia. The improved growth response observed in the present study was similar to that reported previously in various fish species, including Nile tilapia, Siberian sturgeon (Acipenser baerii), and rainbow trout (Oncorhynchus mykiss) (Mahious et al., 2006a; Ibrahem et al., 2010; Ortiz et al., 2013)