Abstract
Eight acnthocephalon worms were collected from the intestine of freshwater fish (Cirrhinus mrigala (Ham.) from Kalri Lake, Sindh, Pakistan. This worm was identified as a new species, Neoechinorhynchus nawazi characterized by having medium size stout body, small proboscis with 3 rows of hooks each having 6 hooks; anterior row hooks larger as compared to the other two rows; proboscis receptacle single layered; lemnisci slightly unequal, testes two, cement gland elongated, saefftigen’s gland prominent, bursa well developed and eggs oval, small and numerous.
