Matted Filefish or Copperband Butterfly?

[Treebeard]

I have had 3 CBBs. The first two were small and only lasted a few weeks and died. I decided to try a larger one which was eating very well in the fish store. I had few aipitasia which it never touched, but it readily ate mysis and seemed to be thriving. It also cleaned every single feather duster from every rock. Eventually it stopped eating, got thin and perished. No more CBBs for this guy.

I have had a matted file fish for around 12 months and it cleaned up all of the aipitasia, although I never saw him eating it, I have none left. He picks away at the rocks but does not touch the corals.

Originally Posted by mark

In a tank full of aiptasia why are Copperbands difficult, would think they have a good food source? Don't they go for the aiptasia from the start?