From Table 3 shown Relationship between body weight and total length of Trichogaster pectolaris infected with Clinostomum piscidium Found thatThe mean of body weight in the females and males is significantly different between the infected and non-infected fish from both farms. andThere is no significant difference among the total length values of fish from both farms.The infection with this metacercaria caused hepatic tissue damage which, in turn, interrupted the hepatic metabolism, causing growth retardation and a decrease in body weight of the fish hosts.