Breeding the Lanceolate Fairy Wrasse (Cirrhilabrus lanceolatus)

Cirrhilabrus lanceolatus is a deep-reef fairy wrasse from Japan and the Philippines in which females turn into males. Its planktonic larvae cannot be reared at home; this guide covers its biology.

Overview

Cirrhilabrus lanceolatus (Randall & Masuda, 1991) is a Western Pacific fairy wrasse recorded from Japan and the Philippines, and photographed from Palau, inhabiting steep seaward reefs in subtropical waters. It is a deep-dwelling species found at depths of 42 to 60 m and reaches about 8.8 cm standard length. As a member of the genus it is a protogynous planktivore whose reproduction follows the fairy-wrasse pattern.

Sexing

Like all Cirrhilabrus, this species begins life as females, and the dominant individual of a group changes into a functional male. The resulting terminal male is the largest, brightest fish, carrying the elongated fins characteristic of mature genus males, while females stay smaller and plainer. Identifying the male therefore rests on size and these developed display characters rather than fixed sexual traits.

Spawning Behavior & Trigger

FishBase records distinct pairing during breeding for C. lanceolatus. In keeping with the genus, a male intensifies its colours and performs a brief 'flashing' display, transiently revealing metallic blue or violet markings hidden at rest, to advertise spawning readiness and deter rivals. A receptive female then joins the male in a short paired ascent into open water where buoyant eggs and sperm are released; the species' deep, steep-reef habitat means these events occur well below normal observation depth.

Egg & Fry Care

As a broadcast spawner, C. lanceolatus produces small buoyant eggs that hatch into planktonic larvae, with no nest or parental care. The larvae feed and drift in open water during a prolonged pelagic phase that home aquaria cannot reproduce. Captive breeding of this deep-water species has not been documented.

Common Challenges

Two obstacles combine: the species is a deep, steep-reef fish that is uncommon in the trade, and like all fairy wrasses its planktonic larvae cannot be reared in home systems. Conditioning adults must therefore account for their deep origin and zooplankton-based diet within a spacious aquarium.