Branchiomycosis (Gill Rot Disease)

The disease is generally known as a bad-management disease since it flourishes up in poor water quality with high levels of organic matter. It is an acute, subacute and chronic mycotic disease that affects cultured fresh and brackish water fish during summer. It is characterized by gill degenerative changes (marbling appearance), gill necrosis (gill rot) and high morbidity (100%) with a 50-65% mortality rate.