Uncommon in most areas, but may be locally common in certain places. Usually attached to gorgonians or seagrasses but may occur in floating Sargassum or swimming freely in midwater (Ref. 9710). Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205). Has been reared in captivity (Ref. 35409). Length type refers to Height (= from top of coronet to the tip of straightened tail).