Treatment experience for common diseases in home koi keeping

 The treatment methods for koi diseases mainly include oral administration, medicated bathing, smearing, injection and surgical treatment.

1. Oral administration: a treatment method in which the medicine is mixed into the feed and fed, mainly treating nutritional disorders, bacterial diseases and internal diseases of the fish. Commonly used medicines are nutrients, sulfonamides, antibiotics, etc. First dissolve the medicine in water, let it penetrate into the granular feed, or mix and knead it before feeding it to the affected koi. 2. Medicated bathing: mainly used to expel parasites on the body surface of the fish and to treat bacterial external diseases; it can also use the absorption function of the gills or skin tissue to treat bacterial internal diseases. Short-term medicated bathing uses a high medicine concentration, and commonly used medicines are trichlorfon, potassium permanganate, etc.; long-term medicated bathing uses salt water, potassium permanganate, formalin, antibiotics, etc. The medicine dosage must be precise; if the concentration is insufficient, it cannot effectively kill pathogens, while if the concentration is too high, it is likely to poison the fish and even cause death. 3. Smearing: applying a high-concentration medicine to a local area, mainly to treat trauma and diseases on the body surface of the fish; commonly used medicines are iodine tincture, potassium permanganate, etc. Before smearing, the affected area on the fish must first be cleaned thoroughly, and then the medicine is applied. 4. Injection: for various bacterial diseases, a treatment method of injecting antibiotics is used, often by intramuscular injection or intraperitoneal injection, which is more effective and direct for the fish to absorb the medicine. It should be noted that when the fish is seriously ill, multiple treatment methods are often used at the same time, such as oral administration and medicated bathing at the same time, or injection of antibiotics.