Kind of hard to tell what's going on. It's a good sign if he is swimming and acting normally. The most important thing you can do is make sure the water is pristine. Keep the water very clean with partial water changes, using dechlorinator and matching to temperature. Clean water is the best medicine for many problems including injuries and early stages of illnesses.
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joy to the fishes in the deep blue sea
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55, 30, 30, 20, 10, and 10-gal. freshwater tropical tanks
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