I really doubt it's ich if they're so perfectly symmetrical. Check on the other one really carefully--esp. the fins--for small dots. If you don't see them at all, it's very possible it's just a coloration thing. Rams can be very varied in coloration and somewhat in patterning. I saw some green ones on the cover of an aquarium fish book today. Wow! I almost took a picture of the book in the store to post here... The ultimate fish nerd thing to do.
Flash... hmm... I've noticed many ppl on the site do use flash for pictures (sometimes self-defeating, as it reflects off the glass so well), but I'm not sure I'd do that with rams. When I take pix I almost never get them of my fast-moving fish, as I generally adjust my shutter speed to quite low to deal with the light levels. But you know, the lights in the aquarium are so powerful, you'd think they would be like outside! But they aren't...
Do you have a way of manually adjusting your camera's focus? If so, try taking a picture at Aperture 2.0 (if you have that wide an aperture) and with shutter speed of 15-30. You might get a darkish picture with just enough light to show the spots you're talking about. And if you post a small enough picture, the camera shake/fish movement might not blur the picture too much. If your camera doesn't allow you to adjust manually, just shut off the flash and take pictures as it will allow you to.