Abstract:
One hundred and twenty rohu (Labeo rohita) from Fish Hatchery Mian Channu (Khanewal-Punjab) were examined for ectoparasites. The copepod ectoparasites found were Lernaea (L.) polymorpha, L. cyprinacea, L. oryzophila, L. lophiara and L. arcuata. Out of 120 fish 46 were infested (38.34%). The predominant parasite was L. polymorpha. An overall prevalence of ectoparasites was L. polymorpha (26.66%), L. cyprinacea (25.83%), L. oryzophila (20%), L. arcuata (5%) and L. lophiara (5%). L. polymorpha was the most abundant ectoparasite in mixed infestation as well.
