"The Moorish Idol is also commonly known in Hawaii as "Kihikihi" which means "curves," "corners," or "zigzags," and refers to its shape and color pattern. It is the only member of the family Zanclidae, and a very close relative of the Tangs or Surgeonfish. One of the most widespread fish, it can be found throughout the Indian Ocean, Red Sea, and all of the tropical Pacific. Wild specimens can attain a length of 7 inches, but 4 inches is more likely in the aquarium.
The Moorish Idol tends to be very peaceful. Due to its size, schooling nature, and need for swimming space, it requires a large aquarium of at least 125 gallons. As its beauty is most evident while swimming, giving it adequate room is well rewarded. It is compatible with most fish and larger invertebrates, but should not be kept with any polyps or corals, which it will eat. Small invertebrates may be threatened as well. "
this is a quote from [Link violation - out of respect to the owner and operator of this site, please do not post links to competitors, thanks! h* ]