Treatment for internal and external parasites like flukes, tapeworms, and flatworm Safe for scaleless fishes and plants EIHO Prazi Gold eliminates a wide range of internal and external parasites. Such parasites include flukes and heartworms in the internal organs of fishes. During an early infestation, there are no apparent symptoms. However, these parasites are most common in imported fish and, caught in the wild, and fish fed with live food. Symptoms of heavy infestation in fishes include: Grossly thin body or swollen belly Loss of appetite and restlessness Black spots on body (caused by flukes) Pop-eye syndrome (caused by flukes) Lose control over movement Prazi Gold is an easy-to-use liquid and provides an effective and fast treatment. The formulation is non-toxic to both fishes and plants. DIRECTIONS 1 cap (5ml) for 50L. Shake well before use. Remove activated carbon during treatment. Each treatment can last 5 days. It can be used as a preventative by adding 5ml for 75 liters every 10 days.