1. Oral cotton disease. The lips of the reticulated corner hanging mouth appear flushed and then swollen, and then there is a cotton-like substance attached. The cause may be injuries to the lips during or during transport from fishing. Only in the case of redness, swelling and bleeding, antibiotics should be given.

2. Gill disease. The reticular horn hanging gills are swollen, making the operculum unable to close the wall. Shortness of breath, difficulty, labored wheezing. The cause may be damage caused by an unsuitable water environment. Or be infected by parasitic parasites. It is necessary to increase the salinity of the water by 0.3-0.5% (do not overdo it). If it is caused by parasitic infection, a formalin 20PPM can be used. Medicated bath it for about 12-24 hours.