Okay thanks!
Fish
yellow tang
royal gramma
red coris wrasse
cleaner wrasse
six line wrassse
coral beauty
midas blenny
starry blenny
flame hawkfish
mandarin
maroon clown
2 x bangaii cardinals
orange spot rabbit fish (in sump)
I think that's all, all I can think of right now anyways. None of the fish bother the tang, the yellow tang and him get along fine.
Tank info
260 gallons
this is the skimmer
We have a wave box as well as two koralia powerheads one on each side(I think, can't remember the brand I'd have to check after work)
We have been feeding the tang two times a day, one feeding of algae usually soaked in garlic or vitamins, and one feeding of either flakes or mysis shrimp also soaked in garlic or vitamins.
We have also been increasing our water changes, my brother did another last night.
The tang only nibbled on the food this morning when my brother fed him. He is hiding behind his rock which is not normal for him, he's usually out and about.