possibly just settling in, to the new water chemestry i think.
origenally my discus used to have dark brown bands down there body but
after a few weeks in the tank they had nearly completly clear skin.

on of the few mysteries of these fish

(i am by no means a discus expert, mine died within a year due to poor
tank maintainance, a real shame as they are very nice fish)

i wouldnt worry too much if all your other fish are fine, it probley is
a personal thing.



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