exiguobacterium aquaticum exiguobacterium aquaticum exiguobacterium aquaticum is a gram-positive, short rod-shaped and motile bacterium from the genus of exiguobacterium which has been isolated from water from the tikkar tal lake in haryana. exiguobacterium aquaticum scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: exiguobacterium species: e. aquaticum binomial name exiguobacterium aquaticumraichand et al. 2012 strains imtb-3094 synonyms exiguobacterium aquarius