Abstract

• Myxosporean parasites were important disease in culture fish species due to decrease fish production. Myxosporean infection in the kidney of three carp species, Labeo rohita, Cirrhinus mrigala and Gibelion catla was conducted from Alone fish culture pond, Monywa Township from June 2019 to May 2020. Amounted to 14 species of myxosporean parasites were observed. The total 90 fish specimens of three carp species, Cirrhinus mrigala, Labeo rohita, and Gibelion catla were studied for the prevalence of myxosporean parasites and histological changes in the kidneys of these species. Seven species of Myxobolus, and one species of Thelohanellus in Cirrhinus mrigala, three species of Myxobolus and one species of Thelohanellus in Labeo rohita and two species of Myxobolus in Gibelion catla were observed. The prevalence of myxosporean parasites of three carp species, Cirrhinus mrigala, Labeo rohita and Gibelion catla were found 83.33 %, 53.33 % and 13.33 % respectively. Histological changes were studied in infected kidneys of three carps, the large amount of matured myxosporean parasites were observed in the epithelial cells of renal tubules, in the blood corpuscle, and glomerulus of kidney. Among these three carp species, Cirrhinus mrigala was infected by more diverse species of myxosporean parasites and appeared more susceptible than the other two carps.