Abstract: To understand the nutritional value of chaya leaf meal (Cnidoscolus chayamansa) as an alternative diet for blue shrimp (Litopenaeus stylirostris), four separate diets that contained 0, 10, 20 or 30% chaya leaf meal were created. These diets replaced a mix of soybean meal/wheat meal (45.63-54.36%) and the effects of these diets were compared to those observed with a commercial diet. The diets were evaluated after ad libitum feeding of juvenile blue shrimp (initial weight of 0.250±0.04 g) for 28 days using a completely randomized design (4 replicates with 6 shrimp per aquarium). Bioassay results from the evaluated parameters demonstrated that the best diets for feeding rate and weight gain were the 20% chaya diet (1.36 g and 269.98%) and the commercial diet (1.46 g and 247.36%). For the feed conversion rate parameter, the best results were obtained from the 20% (2.06) and 0% (2.09) chaya diets. There were no significant differences in survival rates (p>0.05) but shrimp on the commercial diet had the lowest survival rate (88.88%).