• Journal of fish pathology
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• v.7 no.1
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• pp.47-51
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• 1994

The number of maximum 63 Caligus curtus was counted culturing P. olivaceus body surface of 20cm mean body length. respectively. Parasite sites were consist of 63.4% head, 26.9% caudal peduncle, 8.3% operculum and 1.4% the other sites. Also, the sites were secreted in larage quantity of mucus with a very small bleeding. This Caligus parasite was died 15 min to 5ppm and 5min to 10ppm masoten but 28.57% was exterminated to fresh water during the four hours. On the other hand, these Caligus parasites were not exterminated during the 30 min to 200ppm formalin.