Thanks in advance, Sakura8.
This shows some of the pectoral and pelvic fin damage as well as a small scrape.
The gills are definitely reduced in their inflammation--by about 50% from yesterday.
(Please don't ask about the bag...its a leftover from cycling the tank but I have plecos that look like they want to spawn under there and I'd rather not disturb them)
More seriously to my eye, the dorsal wound.
Slightly blurred, sorry. Yesterday about 8 hrs after the trauma, the area was a solid light pink. Now, it has a slight blush of what appears to be blood coming to the surface in the center of the wound where the abrasion was the most severe:
Thanks again for any thoughts.
Although moving him to a small hospital tank with a bit of aquarium salt is a very good idea, I'm weighing it against the fact that he's eating and reasonably active in the tank. I'm wondering if the physical activity will do him good vs. treatment so far.