My words of warning where not towards the tang being hard to keep but rather can be difficult to acclimate and often arrive sickly...
Originally Posted by steve-s
As for the black tang if are you refering to the Zebrasoma rostratum they are not hard to keep but rather hard to acclimate to aquarium life.
Once/if the tang settles in, it can indeed be a very hardy fish. I am glad that you where able to aquire healthy fish MR294
but considering their rarity, it should be left alone IMO