Eeeegh that water!
The guy on the left definitely looks scraped up. I think heat and salt will cure him right up. Their bellies don't look sunken, so they are probably eating okay. The guy on the right looks like he is either healing up from an even worse wound, or is having an infection spread from a smaller wound. Hard to say with him, the spreading shape is very strange to see 'just' from a bump, yannow? Do you know if they were housed with any other aggressive fish that may like using the top of the head for biting?