Pathogens Wuchang Tussima ciliates. The body is flat, long spindle or irregular, and the rear end is extended into a hook shape. Cluster tube insects are often associated with oriental cup worms and hold the handle extensions of oriental cup worms with their arms. The body has 1 to 6 bundles of straws, distributed in front of the body and on both sides; there are up to 40 straws per bundle, and the ends of the tubes are slightly enlarged; the large nucleus has a long rod shape and small nuclei, generally on the side of the large nucleus There are two telescoping vesicles; there are many granules in the cytoplasm that are of different sizes and shapes, which may be food pellets; the size of the parasites is 78 μm to 129 μm × 31 μm to 48 μm. The disease is endemic in all parts of the country. It threatens fry and fingerlings of various kinds of freshwater fish. Generally, the infection rate and the infection intensity are not high. Only when a large number of parasites parasitize the fry of the fry and fingerlings will cause disease. Fish died. Symptoms There are no obvious symptoms during the early stages of the disease. Only when the disease is severe, can the mucus in the affected fish get more mucus and the breathing is difficult. The sick fish swim slowly and die without feeding. Diagnosis of the disease because there is no special symptoms, the body is small, invisible with the naked eye, it must be used microscopy for diagnosis. Note that when only a few cluster tubeworms are parasitic, fish will not be killed and the true cause of fish death should be further examined. prevention 1. Thoroughly clear the pond. 2. Strengthen feeding and management, maintain excellent water quality, and improve fish resistance. 3. Before the fish species are stocked, take any of the following medicinal liquids for the medicinal bath: 8 g to 10 g of copper sulphate per cubic meter of water body, medicinal bath for 10 minutes to 30 minutes, and 5.7 g to 7.15 g of copper sulfate per cubic meter of water. Grams and ferrous sulfate 2.3 g ~ 2.85 g, medicine bath 10 minutes to 30 minutes; per cubic meter of water, put potassium manganate 10 grams to 20 grams, medicated bath for 10 minutes to 30 minutes. treatment 1. The entire pool is sprinkled with copper sulphate or chelated copper, and about 0.7 grams of medicine is applied per cubic meter of water. 2. The whole pool is sprinkled with copper sulphate and ferrous sulfate mixture (5:2). Each cubic metre of water puts 0.36 g to 0.5 g of copper sulfate and 0.14 g to 0.2 g of ferrous sulfate. Zhong Yang Fire Extinguisher Ball,Elide Fire Ball,Afo Fire Extinguisher Ball,Elide Fire Extinguisher Ball DONGGUAN TENYU TECH.INC , https://www.tenyutech.com