Common name: Blue-sided Fairy Wrasse

General information

The Blueside Fairy Wrasse, scientifically known as Cirrhilabrus cyanopleura, is a vibrant and active fish that adds both color and dynamism to a saltwater aquarium. Males are particularly striking with their bright blue flanks, purple head, and yellow to red dorsal fin. Females and juveniles are less colorful but still exhibit an attractive blend of subdued tones.

This species is part of the diverse and colorful wrasse family, known for their interesting behaviors and sexual dimorphism. They are also known for their ability to rapidly change colors during social interactions or when stressed.

Care

Blueside Fairy Wrasses are relatively hardy and adaptable to aquarium life, making them suitable for intermediate aquarists. They thrive in well-established tanks with plenty of live rock for hiding and foraging. A tightly fitting lid is essential as these wrasses are known jumpers, especially when startled or during acclimation to a new environment.

Their diet should include a variety of meaty foods such as frozen mysis shrimp, brine shrimp, and finely chopped seafood. They also appreciate live foods and can help control small pest invertebrates in the aquarium.

Reproduction

In the wild, Blueside Fairy Wrasses are protogynous hermaphrodites, meaning they are born female and can change to male if the dominant male is removed from the group. In the aquarium, breeding is possible but challenging due to their complex social structure and spawning behaviors.

Habitat

Cirrhilabrus cyanopleura is found in the Western Pacific, from Indonesia to the Solomon Islands, and north to the Ryukyu Islands. They inhabit coral-rich areas of lagoons and seaward reefs, typically at depths ranging from 2 to 20 meters.

In the aquarium, they require a well-structured environment with ample swimming space and hiding places to mimic their natural habitat and support their active swimming behavior.