Blue-green chromis-We've had this fish for more than 6 months now (bought from lfs
, not from the wild) and all other tank mates are well. There are 2 engineer gobies, 2 maroon clowns, 1 damsel, 1 hermit crab. All tank perameters are ok. Salt is ok. No one else shows any signs of anything but the chromis started living at the top of the water along the front of the tank and sometimes he stands vertical in the water for the last 4-5 days. He is acting strange but other than that he shows no signs of anything. No scrubbing or rubbing on anything just acting weird. He's eating the same food as the others, the tetramin salt water fish food from the lfs
. ANyone have any similar problems? He used to live along the back top of the tank behind the water delivery-tube for the canister filter. Maybe he changed his residence in the tank? Any ideas.. Sorry I cannot be more specific, I'm new to typing out fish problems. Thanks, Happy New Year!