External parasites are major health concerns for fish causing irritation, lesion, infection, and sickness that can eventually lead to death. The parasites can be divided into 2 groups which are the parasites that are visible to the naked eye on fish skin such as fish lice and anchor worms and the invisible parasites that include Trichodina sp. and Gyrodactylus sp. Both groups are typically found in Koi, goldfish, and other ornamental fishes. The product is designed for effective and immediate elimination of these parasites. The sudden result can be observed when following usage guides and instructions on the label.