Diphyllobothrium is a tapeworm, common in many fish species in Oregon. Most often seen as pale cysts (plerocercoid stages) adhering to the outside of the gut and other organs in the viscera.
also known as
fish tapeworm
salmon tapeworm
broad tapeworm
Diphyllobothriosis disease
Diphyllobothrium latum
Life Cycle Diagram: 
Detection Methods:
gross pathology / gross clinical signs
microscopic exam - histology
microscopic exam - wet mount