I agree, looks like it could be flukes. The white specks on the bottom don't appear to be flukes though. They are too small. They look like surface parasites consistent with Velvet that were knocked off from the freshwater dip. You don't see them on the fish though. I'm thinking these were in the gills. What I see on the fish is much larger like flukes, although I do see a few smaller spots too. Hard to tell from the pics.
I actually had this happen (same white specs) a long time ago and didn't understand what it was. At the time, I thought it was ICH because the fish was completely covered with tiny white spots. Now i'm pretty sure it was (Velvet). It was way too small for ICH and the fish was extremely covered. He died in less than 24 hours from severe respiratory distress. However, the next morning after I treated...There were hundreds of those same white dots I saw on the fish covering the bottom of the QT. The QT had a spotlessly clean "black" painted bottom. They were very visible. I'm assuming it was all the surface parasites that fell off with treatment.
The good thing now is that I have an awesome Microscope and there will be no more guessing games. Yes, I will be posting HD pics and live video very soon with my next batch of fish if any have parasites.