Ive been watching him for the last few minutes, and he came close to view, while eating. More interested in the food, then the fact i was watching. I think he is just fine (knock on wood) and that is the web between the rays.
The one part that is elongated, is that way because it is a wider distance between the rays. I think anyway.
Ok, and he also has tiny white dots on his head, one above each eye, lots on his muzzle, one behind each gill cover/pec. I cant see them very much under the led, but can see them when turning on the brighter led flashlight.
I think they are just his scales? They are not changing either. But after reading about the sick fish, I have to ask.