Dermocystidium

also known as
dermocystidiosis
Dermocystidium in gills of Fall Chinook.
Dermocystidium in gills of Fall Chinook.
Dermocystidium in gills of Fall Chinook.

non-fungal Opisthokonta (unranked Phylum)

Detection Methods:
microscopic exam - wet mount
gross pathology / gross clinical signs