Dwarf Golden Rams

I could have been fighting, or it could have caught itself in some decor.

How many rams do you have, what gender are they all, and what is this fish? Males will fight over territory, and a male and female won't necessarily get on. These fish like to choose their own mates so buying any male and any female doesn't guarantee a happy result.

Do you have any decor with narrow spaces that a fish could get stuck in? Fish have been known to wedge themselves in. Since the red marks are on both sides of its head, this is a possibility.