The particular microbial strains that we used in the present work, considered as potentially probiotic (PPB), increased resistance to environmental stress events in Nile tilapia Oreochromis niloticus (Apún-Molina et al., 2009), and increased survival to white spot syndrome virus (WSSV) exposure in whiteleg shrimp Litopenaeus vannamei (Peraza-Gómez et al., 2009)