Bio-fungicides are the fungicides which are from non - inorganic sources like plant origin or animal origin or may be organisms. Many hyper parasites like fungus and bacteria are used as organic or bio fungicides. Bacteria and fungi of certain families are known to kill plant pathogenic fungi on many of the crops as well as in the soil. These are also called biological agents to control the fungal diseases. These bacteria or fungi may directly kill the pathogenic disease causing fungi, struggle for the food and space to live, may release the toxins to kill the pathogenic fungi or bacteria.