I am new to the saltwater aquarium community and just got my first damsel fish. The only problem is it has some weird marks on it. I don’t think it resembles ich or velvet, but am concerned on what it could be and if it is harmful. He also is hiding and not eating food, but it’s only been one day since I put him in the tank, so I’m not too worried about that part. I attatched some photos below. Please let me know if anyone has ideas!