[Pathogen] It is herpes virus.

【 Symptoms 】 The body surface of the diseased fish is dark and dull, and the mouth, muscles and various fin bases are congested. Sometimes there is congestion on the gill cover, head and abdominal wall; Branchial filaments are bright red spots or congested plaques; Seriously sick fish, due to a large amount of congestion in other organs and tissues, make their gills pale and "white gills". In addition, exophthalmos, intestinal tract and internal organs show congestion. Sick fish lose appetite, move slowly, often swim alone or slowly, lose weight, muscle atrophy and even die. The onset season is mostly from June to September, and the water temperature is 25 ~ 30℃, which is the most popular and the mortality rate is quite high.

[treatment method]

(1) Get enough sunshine and lower the water temperature below 25℃ for about 10 days, and you can see the curative effect.

(2) Take a bath with 1% salt water 1 week.

(3) Grinding 0.25-0.5 kg of rhubarb and 0.5 kg of Liquidambar formosana leaves into powder, decocting in water or soaking in hot water, then mixing with bait to make medicinal bait, and feeding the sick fish for 5 days, while using 0.6ppm of dichlorvos in the aquarium for 2 days.

(4) Water bath treatment with 3-5 ppm (3-5 ppm) dijunling, or 0.7 ppm (0.7 ppm) solution of copper acetate, copper chloride and copper sulfate, or rhubarb extract has better effect.