New Aquarium/ Injured fish
I just purchased a 65 gallon used aquarium. The only thing that the person had in it was a 3 striped damsel. She had let all of her live rock die off and it was invested with algae. In the move I believe the damsel got injured. It has some scratches on its body and it just lays on its side at the bottem of the aquarium. It also has and almost greenish tint to it at the front of its head. All water tests are normal.
I'm not overly attached to this fish, but I'd hate to see it die if I can save it. Any help?