A couple of days ago I bought a 4" Powder Blue Tang and it's currently in a 38gal QT. I also put in a large LR for it, since I know they like to graze. It looks good, healthy but it's so incredibly shy! It's always hiding in a PVC pipe when someone is around and barely comes out to eat. It'll dash out to pick at the LR or get some algae from the clip, then quickly dashes back in the PVC. Is this normal behavior for a Powder Blue or it's just the new home? I never had such a shy fish before.