This study investigated effects of extruded diet (ED) and pelleted diet (PD) with differing dietary protein levels on growth performance and nutrient utilization in juvenile largemouth bass (LMB). Nine hundred LMB (initial body weight of 6.47 ± 0.1 g)were fed for eight weeks in five levels of crude protein (40%, 44%, 48%, 52% and 56%) with pelleting or extruding processing technology. The results showed the weight gain (WG, 380.65%), apparent digestibility of crude protein (ADCP, 55.76%), dry matter (DM, 89.70%) and whole-body crude protein (6...