Cloudy Eye is a condition in which a cloudy white film or grey haze forms over the Arowana's eyes. It may cause the affected eye to appear opaque or slightly opaque. Under severe cases, fungal growth appears on the surface of the eyes. It is advised to carry out the treatment as soon as possible to treat Cloudy Eyes as, with time, it may lead to secondary infections that sometimes lead to blindness too. Behavioral signs in the Arowana include signs commonly associated with a loss of vision, anorexia (loss of appetite, lethargy, and agitation) fish will attempt to rub against a rough surface to decrease the irritation.