Well Chernobyl happened 21 years ago so any superheros that came out of it would be of legal age now to declare to the world their powers but alas none have as of yet. So with this in mind, if you had super powers which hard-to-keep fish would you grant captivate-care good health? I would choose the mighty Moorish Idol. Such a beautiful fish I can't take my eyes of them when I see them swimming around, so graceful they are. So unfortunate they do not do well in captivity.