also known as: Posthodiplostomum minimum, fluke
White grub is a trematode parasite, most often seen as small white cysts in the flesh of fish and especially evident in the liver. Commonly observed in sunfishes and minnows in Oregon, the parasite has a complex 3-host life cycle, which involves the fish, a snail and a bird. White grub is usually smaller than yellow grub and encysts in visceral organs rather than throughout flesh espescially kidney, liver, heart. Adult trematodes devlop in the intestine and their eggs are released with feces. The organism does not affect humans.