gramella bathymodioli gramella bathymodioli gramella bathymodioli is a gram-negative, rod-shaped, strictly aerobic and motile bacterium from the genus of gramella which has been isolated from a mussel from the tangyin hydrothermal field. gramella bathymodioli scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: gramella species: g. bathymodioli binomial name gramella bathymodioliliu et al. 2020 type strain bom4