In order to evaluate the effect of inclusion of different lipid sources on growth perfor - mance and proximate composition of Nile tilapia Oreochromis niloticus fillet, four diets were manufactured with: fish oil (FO), palm oil (PO), chia seeds (CS) or flaxseeds (FS). The experiment was conducted for 45 days at Betania reservoir (Huila), in 20 floating