Have had the tank going for about a month now. Recently added a yellow tang on tuesday. My concern is that i noticed a marking down the side of the fish on both sides. The marking is white when i first turn the tank lights then begins to turn yellow. Here's a link to a high res picture to give an idea of what I'm talking about.
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I assumed it was because the fish was frightened but the markings have been there for a few days now. Any ideas ?
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I assumed it was because the fish was frightened but the markings have been there for a few days now. Any ideas ?