Three types of fish diseases to focus on in August

River crab black gill disease Poor water quality is the main cause of the disease. The gill filaments of the diseased crabs are dark gray or black. In severe cases, all the gill filaments turn black. Treatment method: 1, sprinkle dibromohydantoin 0.2ppm, every 3 days and sprinkle photosynthetic bacteria in the entire pond , concentration 5ppm,
Treatment methods: 1, apply cephalosporin or erythromycin ointment to the affected area, or bathe with chlortetracycline or streptomycin at 10mg per liter of water; 2, " Biebikang developed by Shanghai Fisheries University