Two feeding experiments were conducted to study the effects of different levels of solventextracted soybean meal on the growth and body composition of juvenile southern flounder Paralichthys experiment 1, seven diets were formulated, replacing menhaden fish meal protein (FMP) with soybean meal protein (SBP) at 0, 10, 20, 30, 40, 50, and 60% without supplementing amino acids.