The Australian Scott's Fairy Wrasse, also known as the Black-fin or Blackedge Fairy Wrasse, originates from the waters of Australia, Cook Islands, and Fiji, and each location represents a colour variation of irrhilabrus scottorum.
The Scott's Fairy Wrasse from Fiji is also known as Scott's Greenback Fairy Wrasse and is mostly green in colour with a striking black margin on the dorsal fin. Scott's Fairy Wrasse originating from Cook Islands is bluer in coloration with yellow fins and contains more definitive breaks between the colors. The variety collected from Australia contains more red within the fins and the break in coloration within the body is less dramatic. The male and female of this species are similarly coloured, but when courting, the male will display increased colour intensity. Colours may vary depending on the fish's mood.
The Scott's Fairy Wrasse is a very peaceful, active fish that will bring both colour and activity to a fish-only or reef aquarium of 90 gallons or larger. They will not bother any corals or invertebrates making them a perfect fish for the reef aquarium. These wrasses like to jump, so a tight fitting canopy is recommended.