Spots on an Oscars fins

Here is a pic I just took. Shows it much better here. I agree, I don't think it's anything to worry about just want to make sure. He's not the dominant one his brother is. So it could just be some form of stress.

Roliva, you described it perfect. It could be from the pleco. He likes to try and pick a fight with the plecos once in a while but my big pleco doesn't put up with it much and chases him. I have seen him ocasionally whip his butt pretty good, so maybe they are wounds that repaired themselves this way.

oscar1.jpg
 
It's hard to tell, but it looks like where the rays have been broken on the fin and are repairing. I would wait a little while to see if they go away or get worse. I would keep an eye on him, but if he's acting good and healthy I wouldn't worry about it too much.
 
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