Species/Subspecies: Flavobacterium psychrophilum
Category: Motile
Etymology: Genus name: A yellow small rod.
species epithet: cold loving.
Significance:  [Of minor importance]   
Alternative Species Name(s):Flexibacter psychrophilus
Taxonomy:
Phylum
Bacteroidota
Class
Flavobacteriia
Order
Flavobacteriales
Family
Flavobacteriaceae 
Genus
Flavobacterium
Type Strain: ATCC 49418 = CCUG 35200.
Macromorphology (smell):
Flavobacterium psychrophilum  Flavobacterium psychrophilum  Flavobacterium psychrophilum  
Flavobacterium psychrophilum  		Forms small yellow colonies (1-2 mm in diameter). Produce a pigment.
Micromorphology: Thin rods (0.3-0.5 x 2-5 µm) with rounded or tapered ends, which sometimes form long filaments (see picture under Gram staining). The bacterium is motile by gliding on surfaces.
Gram +/Gram -:
Flavobacterium psychrophilum  		G-
Metabolism: Aerobic
Catalase/Oxidase:
Spec. Char.:
Special Media:
Disease:Rainbow trout fry syndrom (RTFS), bacterial cold-water disease (BCWD)
Hosts: Salmonid fishes
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_009613 JIP02/86 2 861 988 1c + 0 
16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
AF090991 ATCC49418T 1 424 6 

Taxonomy/phylogeny:
Flavobacterium psychrophilum  		 About 130 species have been described within the genus Flavobacterium. These species are environmental bacteria which are found in soil and freshwater. The genus Flavobacterium is relatively closely related to the genus Riemerella, which also belongs to the family Flavobacteriaceae.
Comment:Cause problems in fish farming.
Reference(s): No. 3
Updated:2023-03-15