: 23 fish with suspected abdominal dropsy were chosen and 13 were observed to be infected with a cyst in the liver. It was detected that the Myxobolus sp. caused the infection. The livers with cysts was excised, crushed in a homogenizer, then suspensions were prepared in water, later centrifuged and finally the spores were counted with the help of a hemocytometer. Among the 13 fish examined, the number of spores in 0.01 gr were determined to be 1.1x10 5 and 1.5x10 6 .

: 23 fish with suspected abdominal dropsy were chosen and 13 were observed to be infected with a cyst in the liver. It was detected that the Myxobolus sp. caused the infection. The livers with cysts was excised, crushed in a homogenizer, then suspensions were prepared in water, later centrifuged and finally the spores were counted with the help of a hemocytometer. Among the 13 fish examined, the number of spores in 0.01 gr were determined to be 1.1x10 5 and 1.5x10 6 .