marinifilum fragile marinifilum fragile marinifilum fragile is a gram-negative, facultatively anaerobic and moderately halophilic bacterium from the genus of marinifilum which has been isolated from tidal flat sediments from korea. marinifilum fragile scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: marinifilaceae genus: marinifilum species: m. fragile binomial name marinifilum fragilena et al. 2009 type strain cect 7942, imsnu 14138, jc2469, jcm 15579, kctc 22488