What is Columnaris disease in Betta fish?
Introduction: Columnaris disease, also known as Cotton Wool Disease, is a common and highly contagious bacterial infection that affects Betta fish (Betta splendens) and various other freshwater fish species. This disease is caused by the bacterium Flavobacterium columnare, and it primarily targets the fish’s skin, gills, and mouth. Columnaris disease can spread rapidly within aquariums…