Yellow grub is closely related to black spot and has a similar life cycle. It appears as yellow or white spots in the flesh, sometimes over one-half cm long. Smallmouth Bass and Yellow Perch tend to be the species most commonly inflicted with yellow grub in Ontario. There are no external signs on a fish to indicate that the flesh contains yellow grub. If only a few grubs are found in a fillet, they can be easily removed with a knife tip. Otherwise, infected fish can be consumed with proper cooking.
