The identification of the isolated Flavobacterium strain was checked on the basis of the characteristic yellow-green colonies, with rhizoid edges that contained Gram negative rods exhibiting gliding motility (Shamsudin and Plumb, 1996).
Gliding motility was checked under a microscope (magnification, x 100) by using a hanging drop preparation of a 48 hours liquid medium culture.
The four strains isolated in this study were similar in size, shape and the gliding motility of bacteria.