Ligulesis and digrammosis are helminthos fish disease of carp species caused by plerocercoids of cestodes, ligule and digramma. Pathogens of the afore-mentioned disease parasitize in abdominal cavity of bream, sea-roach, crucian (carp), tench, silver bream, roach, , carp, silver carp and other fishes causing reduction of growth, partial or complete atrophy of intestines, especially gonads. The document consists of 5 Secs. Section 1 lays down general provisions. Section 2 regards epizootology. Se