This is a highly coveted reef aquarium species, among the rarest of the rare wrasses, in the past often fetching a King's Ransom from aquarists who could handle the price tag.
The Golden Rhomboid Fairy Wrasse was once a very difficult fish to obtain, being most common in deeper water (125-ft. or more) beyond the reach of most collectors and with a limited distribution—exports generally come from the Marshall Islands (especially Kwajalein Atoll). While not common, it is now more readily available.
It is more secretive than other, more commonly seen Cirrhilabrus spp., such as Scott’s Fairy Wrasse (C. scottorum). It will tend to hide in brightly lit, shallow reef systems, and a deeper tank with more subdued lighting is much more appropriate. Most aquarium specimens grow no larger than 4.7 inches.
Larger specimens sometimes ship poorly and are best shipped in large shipping bags with ample amounts of water. The Rhomboid Fairy Wrasse is typically considered to be one of the less aggressive members of the genus.
This species is very similar to the much-coveted Lined Fairy Wrasse (C. lineatus). However, C. lineatus has larger eyes, and a rounder and shorter caudal fin, and the lines on its body are straighter and narrower than the interspaces between them. The coloration is also different; see image Lined Fairy Wrasse.
NO GUARANTEES ON SIZE OR COLOR VARIATIONS.