The

class Class or The Class may refer to: Common uses not otherwise categorized * Class (biology), a taxonomic rank * Class (knowledge representation), a collection of individuals or objects * Class (philosophy), an analytical concept used differently ...

Flavobacteriia is composed of a single order of environmental bacteria. According to Bernardet ''et al''., Flavobacteriia are Gram-negative aerobic rods, 2–5 μm long, 0.3–0.5 μm wide, with rounded or tapered ends that are motile by gliding, yellow (cream to orange) colonies on agar, decompose several polysaccharides but not cellulose, G+C contents of 32–37%, and are widely distributed in soil and fresh and seawater habitats. In particular, Flavobacteriia are prominent members of marine biofilms. The

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen( ...

''Flavobacterium aquatile'' was isolated from a well in Kent, England. Flavobacteriia are a group of commensal bacteria and opportunistic pathogens. ''

Flavobacterium psychrophilum ''Flavobacterium psychrophilum'' is a psychrophilic, gram-negative bacterial rod (3-5 µm in length), belonging to the Bacteroidota. It is the causative agent of bacterial coldwater disease (BCWD) and was first isolated in 1948 during a di ...

'' causes the septicemic diseases rainbow trout fry syndrome and

bacterial cold water disease Bacterial cold water disease (BCWD) is a bacterial disease of freshwater fish, specifically salmonid fish. It is caused by the bacterium '' Flavobacterium psychrophilum'' (previously classified in the genus ''Cytophaga''), a psychrophilic, gram-ne ...

. The name is often spelled Flavobacteria, but officially named Flavobacteriia in 2012.

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UniProtNamesForLife
Bacteroidota {{Flavobacteria-stub