Sixty- five roach (Rutilus rubilio) in Iznik lake were examined for helmint
h parasites. A total of 3 species of helminth parasites were foul-td on 57
of 65 fish examined. The following parasites were found : 168 Dactylogyrus
sphyrna, 73 Neoechinorhynchus rutili. 9 Eusterongylides sp.