Symptoms, epidemic characteristics and control methods of white head and white mouth disease
Symptoms, epidemic characteristics and control methods of white head and white mouth disease
(1) Pathogen It is caused by the invasion of myxobacteria into the fish body.
(2) Symptoms The head and mouth ring of the diseased fish are milky white, and the lips appear swollen, so that the mouth cannot open and close and breathing becomes difficult. In severely diseased fish, there are ulcers on the affected parts, and the heads of some fish are congested. The diseased fish float on the water surface, are relatively thin, have a reddish body color, respond slowly to people and bait, and soon die.
(3) Epidemic characteristics The epidemic season is generally from early May to late July. It mainly infects ornamental fish fry, with rapid onset, fierce momentum and serious harm.
(4) Control methods Soak in 20 mg/L nitrofurazone or furazolidone for 10 to 20 minutes, or splash a 2 mg/L nitrofurazone solution over the whole pond, soak for several days, then replace with fresh water.
(2) Symptoms The head and mouth ring of the diseased fish are milky white, and the lips appear swollen, so that the mouth cannot open and close and breathing becomes difficult. In severely diseased fish, there are ulcers on the affected parts, and the heads of some fish are congested. The diseased fish float on the water surface, are relatively thin, have a reddish body color, respond slowly to people and bait, and soon die.
(3) Epidemic characteristics The epidemic season is generally from early May to late July. It mainly infects ornamental fish fry, with rapid onset, fierce momentum and serious harm.
(4) Control methods Soak in 20 mg/L nitrofurazone or furazolidone for 10 to 20 minutes, or splash a 2 mg/L nitrofurazone solution over the whole pond, soak for several days, then replace with fresh water.