My coris wrass has been in tank 4"3 months. Added 3 months ago with sbanana wrass and every thing has been fine until 2 days ago when I noticed it was buried in sand with a tiny portion of his tail showing... I left him be and this moarning I noticed half his body hanging out the sand and I thought he was dead. When I went to scoop him out he poped back to life and buried him self back in sand. I left him be all day until just now when I saw half his head sticking out the sand. The place he is buried the powerhands move the sand around so that's y he is being uncovered. I have him in a peacemaker now and was thinking of freshwater dipping him but once I saw how black his body was I had no clue what may be going on with this guy. any help would be appreciated. Not sure he has mutch longer to make it.