exiguobacterium aestuarii exiguobacterium aestuarii exiguobacterium aestuarii is a gram-variable and rod-shaped bacterium from the genus of exiguobacterium which has been isolated from tidal flat from the beach of daepo in korea. exiguobacterium aestuarii scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: bacillaceae genus: exiguobacterium species: e. aestuarii binomial name exiguobacterium aestuariikim et al. 2005 type strain tf-16 synonyms exiguobacterium gaetbuli