Fish pathology in the in Pathobiology Fellowship Chapter exams of the ANZCVS.

I’ve been asked by one of the examiners to contribute some pathognomonic gross lesions of fish diseases to be included in the veterinary pathology specialist exams for the Australian & New Zealand College of Veterinary Scientists. I’d have to say that unlike diseases in terrestrial animals, there are fewer than 10 diseases in fishes that you can identify grossly without using special equipment or further investigatory work. Every other disease relies on testing water quality, examination using microscopy, bacterial cultures and virology techniques. This is really where the interesting things begin!