A fungal disease of the gill tissue in fish characterized by respiratory distress and gill necrosis. The causative agents are [Branchiomyces sanguines] and [B demigrams], which are opportunistic pathogens found in decaying organic materials in the aquatic environment. Fungal diseases in fish are often secondary infection that follow environmental insults such as traumatic injuries, poor water quality, and other infectious agents.
(E) Emanations of other problems