IMO Yellow tangs are probably the hardiest but if mine is any indication they can be quite aggressive. I have had a hippo/regal tang for over a year and have never seen ich on it - or my yellow or Naso for that matter. The most difficult/finicky tangs are the Powder Blue, Achilles (but I want one anyway) and the Powder Brown. From what I have read they are all ich magnets. Naso tangs get very large. I have one in a 190g tank and it has to be 10" long and very fat. Great fish though with lots of personality and outgoing - will eat easily out of my hand. HTH
|