Figure 1. Isolation of Flavobacterium columnare on selective medium (cytophaga agar). A) Colonies on cytophaga agar are flat, rhizoid, strongly adherent, and spread across solid media surfaces forming irregular margins. B) A higher magnification of one of Flavobacterium columnare rhizoid colonies

From

Can Fucoidan Decrease the Mortalities Caused by Columnaris Disease in Nile Tilapia?

Hebatallah Ahmed Mahgoub

World Journal of Agricultural Research. 2018, 6(1), 1-4 doi:10.12691/wjar-6-1-1