Katherine’s Fairy Wrasse, Cirrhilabrus Katherine, is a perciform fish that belongs to the reefs of the Indian and Pacific Oceans. The Katherine’s Fairy Wrasse is among the most popular fish of the Labridae family that easily reaches a maximum length of 5.9 inches. These Male Katherine’s Fairy Wrasses are more colorful than their female counterparts. They are generally called the ray-finned species in the Wrasse family. The Katherine?s Fairy Wrasse was first discovered and published by Randall Valid in 1992. Making to the IUCN Red List, these fish are still a rarity into the aquarium trade.