Moorish Idols are very graceful with their long dorsal fin and are always lovely to encounter. I have had difficulty photographing them as they are quite shy and very reflective which can make over-exposure an issue. Measuring side to side Moorish Idols are very thin like butterflyfish and angelfish. Moorish Idols are quite similar in appearance to bannerfish, a type of butterflyfish. See Bannerfish in Red and Green Soft Corals.
This image is available to 8 x 8 inches.