I bought my first 2 fish, small Occelaris clowns 10 days ago. I don't have a QT, I know I should. A couple days ago I noticed the slightly larger and clearly more aggressive of the 2 was a slightly darker shade of orange over the length of the fish only on top. Yesterday I noticed the same fish has some dark patches on its first white stripe, no where else. Eating well, coming front and center as we approach tank, acting normal. The other one looks and acts normal as well. Water parameters are super clean. Nitrates are 10. No corals, no news, so I know it s not stings. Am I just paranoid? Thanks