These are all of the pathogen images in our database.
Click a pathogen name to jump to the pathogen info page. Click an image to enlarge it, then use the left and right arrows to browse.

Trematodes (flukes & grub...
Bluegill heart with white trematode metacercariae.
Hexamita
Hexamita in stained skin smear
Bacterial Cold Water Disease
Tissue damage caused by Flavobacterium.
Lingula intestinalis
Numerous adult Lingula.
Ichthyophonus
Ichthyophonus growing in dead host tissue.
Salmincola
Salmincola adults on gills of trout.
Echinochasmus
Trematode metacercaria in gills.
Ichthyobodo
Ichthyobodo in Chinook gill section.
Hemoflagellate
Stained blood smear showing the hemoflagellate Cryptobia salmositica.
Nanophyetus
Nanophyetus metacercaria (black spots) on ventral surface of fish.
Ichthyobodo
Ichthyobodo on gill filament.
Trichodina
Trichodina.
Neoechinorhynchus sp.
Male Neoechinorhynchus sp.
Fungi
Severe fungal infection in skin of steelhead.
Ich - Whitespot Disease
Small white spots are Ich on the skin of Fall Chinook salmon.
Margaritifera
Larval molluscs (glochidia) on gills of salmon.
Fungi
Fungal lesion on largescale sucker
Neascus
Neascus metacercaria
Strawberry disease
Red patches known as "strawberry disease".
Bacterial Kidney Disease
Renibacterium visible in histological section.