aminobacterium thunnarium aminobacterium thunnarium aminobacterium thunnarium is a gram-negative, anaerobic, mesophilic and non-spore-forming bacterium from the genus of aminobacterium which has been isolated from sludge. aminobacterium thunnarium scientific classification domain: bacteria phylum: synergistota class: synergistia order: synergistales family: synergistaceae genus: aminobacterium species: a. thunnarium binomial name aminobacterium thunnariumhamdi et al. 2015 type strain ota 102, dsm 27500, jcm 19320