OK, this is the second copper banded butterfly fish that I bought for my reef because i need some help controlling the aptasias in the aquarium... (I also like the look of them anyway 
The first one died a strange way, Its top back fins looked like they rotted off him after about a week of me getting him... He did eat some of the mysis shrimp that I feed the fish and still died....
I decided to try again because the aptasias are out of control... This little guy is about the size of a silver dollar and I see him picking at the rocks all the time but I have yet to see him eat some of the mysis shrimp. I have tangs also so I put the dried sea weed in there also 2 times a week and have not seen him eat that either.... I am starting to notice his top back fins are not looking to hot but it might just be me seeing things lol.. however he does look thin and I am not sure if he is eating...
Any ideas how to get him to eat?
Maybe should I get some live brine shrimp from the store on my way home? would he eat that? Not sure what to do...

The first one died a strange way, Its top back fins looked like they rotted off him after about a week of me getting him... He did eat some of the mysis shrimp that I feed the fish and still died....
I decided to try again because the aptasias are out of control... This little guy is about the size of a silver dollar and I see him picking at the rocks all the time but I have yet to see him eat some of the mysis shrimp. I have tangs also so I put the dried sea weed in there also 2 times a week and have not seen him eat that either.... I am starting to notice his top back fins are not looking to hot but it might just be me seeing things lol.. however he does look thin and I am not sure if he is eating...
Any ideas how to get him to eat?
Maybe should I get some live brine shrimp from the store on my way home? would he eat that? Not sure what to do...