Treatment of Common Diseases in koi fish

The common fish diseases in koi fish mainly include water mold, gill rot, enteritis, scaling and so on.

1. Fish with symptoms of water mold (dermatomycosis, white disease) are parasitic with gray cotton wool and hairless hyphae. Prevention and control methods ① malachite green is soaked in 0.2 ppm ~ 0.4 ppm② 0.5ppm formalin; ③ Mix 400-500 ppm of salt and 400-500 ppm of sodium bicarbonate into a mixture, and smear the sick fish in a small pond.

2. The symptoms of gill rot fish are slow movement, black body color and head. In severe cases, the gill filaments rot and the gill cover has a small transparent window. Prevention and control methods ① bleaching powder 1ppm soaking; ② soaking in nitrofurazone 1.5 ppm ~ 2 ppm; ③ 0.3ppm erythromycin immersion; ④ 0.5 ppm ~ 0.7 ppm copper sulfate overflowed.

3. The symptoms of enteritis are black body color, red and swollen anus, swollen abdomen and yellow mucus overflowing in abdominal cavity. Control methods ① Furazolidone 0. 1ppm~0.7ppm ~ 0.7ppm, oxytetracycline mixed with bait for feeding; ② furazolidone 1 g ~ 2 g/ 100 kg orally for 3 days; (3) Mashing a small amount of garlic, mixing with bait and feeding for 3 days.

4. Symptoms of scale disease (scale disease, pine scale disease) The surface of the fish is rough, the scales of the whole body stand up like pine balls, the scales are swollen at the base, and there is exudate inside. Prevention and treatment methods ① Furacillin 1ppm treatment. ② Feed water containing 0.5% salt, stop eating for 2 days, and feed 0.6g sulfadiazine bait to each tail every day. ③ Soak in 2% saline solution 10 minute. ④ Erythromycin 2.0 ppm ~ 2.5 ppm for 30 minutes ~ 50 minutes.