Potential probiotic Lactobacillus plantarum VSG3 improves the growth, immunity, and disease resistance of tropical freshwater fish, Labeo rohita

► Effects of dietary probiotics on the growth, immunity, and disease resistance of Labeo rohita. ► 60 days feeding trial with dietary Lactobacillus plantarum VSG3 at 0, 106, 108, 1010 cfu g−l. ► Probiotic supplementation improves growth parameters and immune responses. ► Probiotics enhances resistance of L. rohita against Aeromonas hydrophila infection. ► Dietary L. plantarum VSG3 administration at 108 cfu g−1 is an optimal dose.