Flavobacterium columnare
（重定向自Flexibacter columnaris）
![](/Images/godic/202501/13/Columnaris_disease3404.jpg")
Flavobacterium columnare is a thin Gram-negative rod bacterium of the genus Flavobacterium. The name derives from the way in which the organism grows in rhizoid columnar formations.
The species was first described by Davis (1922), and the name was validated by Bernardet and Grimont (1989).