FISH PARASITE EXTERMINATING AGENT AND FISH PARASITE EXTERMINATING METHOD

摘要

PROBLEM TO BE SOLVED: To provide means for exterminating fish parasite, particularly an effective exterminating method for parasite belonging to ciliate.SOLUTION: A fish parasite exterminating agent containing a folic acid synthesis inhibitor or a folic acid activation inhibitor as an active ingredient. The folic acid synthesis inhibitor comprises a sulfa agent, such as sulfamethoxazole, sulfamonomethoxine, sulfadimethoxine, sulfamerazine, sulfisoxazole, sulfisomidine, sulfamethizole and sulfisozole. The folic acid activation inhibitor comprises pyrimethamine, trimethoprim, ormetoprim, methotrexate, denopterin, pteropterin, aminopterin, edatrexate, piritrexim and the like.