I purchased 3 x yellow tail damsels yesterday and slow dripped them,and introduced them to the tank. Two of them after 10 mins came out and swam about but the third who I noticed was a darker colour, stayed in a little I shot in one of the rocks. This morning I could not find number 3 the other two are swimming around as if they own the place.I pulled the rocks out of the way and found number 3 he is still a darker colour, so I have put him in to a bowl within the tank to see if he picks up a bit, I have cleaning crew a carpenter a couple of clowns (who are not concerned with the damsels) any ideas if this little fellow is ill !!!
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