Things seem different in Australia.
I lived in a city with four excellent Universities, and untold numbers of vets. None would look at fish. Even though I was a lecturer at one of the universities for 10 years, I couldn't get anyone. They would put me in spare classrooms at the biology building, and no one would look at a fish.
I met one veterinary student who was training to work the salmon farms, and he would have checked a fish quite happily. While I knew him, my fish were going great with no questions.
Here, there's a paywall. If anyone would look, the cost would be high.