Spot on my Blue Atlantic Tang
Tonight I noticed a brown spot on my tang. He is very obsessed with the sea weed I put in the tank. To keep the other fish away from it he swims fast by the sea weed and brushes against the sand bed. I think he does this to intimate the other fish. Do you think this is what is causing the spot. He is starting to turn Blue and the spot gets a little lighter as his moods change.
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