Lior Guttman obtained his Ph.D. from The Hebrew University of Jerusalem, Israel. He is currently a senior research scientist at The National Center for Mariculture of Israel Oceanographic & Limnological Research in Eilat, Israel. His mainly interest is in microbial communities and their individuals as a pivotal component in their ecosystems. Toward this goal, he is studying the composition of microbial populations of interest, their metabolism and inter-community and community-environment interactions, mainly in aquaculture settings which intensifies the microbial populations and accelerate their metabolism and impact. His research combines classical chemistry and biology with state- of- the- art omics and molecular tools, bioinformatics, and proteomics performed in vivo, in vitro and ex vivo. The gained knowledge is used for understanding of the functioning of microbes in the aquaculture environment (i.e., water, biofilters and cultured organisms) and to influence, for some extent, their role in improving water quality, absorption and utilization of food ingredients, removing morbidity factors and decomposing and utilizing plant biomass.