actibacter actibacter actibacter is a genus in the phylum bacteroidota (bacteria). the genus contains a single species, namely a. sediminis. actibacter scientific classification domain: bacteria phylum: bacteroidota class: flavobacteriia order: flavobacteriales family: flavobacteriaceae genus: actibacter type species a. sediminis a. sediminis a. sediminis, like other members of the phylum bacteroidota, is gram-negative and its major respiratory quinone is mk-6. additionally, it grows aerobically and forms yellow-pigmented colonies which, however, do not contain flexirubin-type pigments. this non-motile rod-shaped bacterium was isolated from tidal flat sediment of dongmak on ganghwa island, south korea. etymology the name actibacter derives from:latin noun acta, seaside; neo-latin masculine gender noun, a rodbacter, nominally meaning "a rod", but in effect meaning a bacterium, rod; neo-latin masculine gender noun actibacter, rod from the seaside. while the epithet sediminis is from latin genitive case noun sediminis, of a sediment.