Cheilinus fasciatus (Red-breasted Wrasse) Breeding Guide

Cheilinus fasciatus is a large protogynous Indo-Pacific wrasse that broadcast-spawns planktonic eggs in pairs. It reaches 40 cm and has no documented captive reproduction.

Overview

Cheilinus fasciatus, the Red-breasted Wrasse, is a large reef wrasse of the family Labridae, native to the Indo-Pacific from the east coast of Africa and the western Indian Ocean to Micronesia, Samoa and Tonga, north to the Ryukyu Islands and south to Queensland. FishBase records a maximum standard length of 40 cm. It inhabits lagoon and seaward reefs over mixed coral, sand and rubble, typically between 4 and 40 m. FishBase classifies it as oviparous with distinct pairing during breeding.

Sexing

Like most labrids, this species is a protogynous hermaphrodite: individuals mature first as females and the largest can later transition into terminal-phase males. Terminal-phase fish show a more pronounced red band and a more convex forehead than initial-phase and juvenile fish. Because functional sex is tied to social rank and body size, fixed pairs cannot be selected reliably at purchase.

Conditioning

In the wild the diet is dominated by hard-shelled benthic invertebrates such as molluscs, crustaceans and sea urchins. Any conditioning attempt would require sustained, varied meaty feeds matching this carnivorous, durophagous diet, delivered in a system large enough to hold a multi-individual social group. No conditioning protocol leading to captive spawning has been published.

Breeding Setup

There is no established aquarium breeding setup for this species. Its adult size of around 40 cm, its reef-flat home range, and the haremic social system typical of the family place its space requirements far beyond ordinary aquaria. Wild reproduction occurs on open reef where pairs ascend into the water column to release gametes.

Spawning Behavior & Trigger

Labrids typically broadcast-spawn, releasing large numbers of planktonic eggs that are dispersed by tidal currents, and adults provide no care to the offspring. FishBase notes distinct pairing during breeding for C. fasciatus. The natural triggers are environmental cues on the reef rather than conditions that can be replicated in a tank.

Egg & Fry Care

Eggs are pelagic and the resulting larvae are planktonic, drifting and feeding in the water column before settlement. This open-ocean larval phase, with its tiny first-feeding stages, has no counterpart in home aquaria, which is the central reason the species is not captive-bred.

Common Challenges

The decisive obstacles are the broadcast pelagic spawning mode, the demanding planktonic larval rearing, the large adult size, and the protogynous social structure that makes pairing unpredictable. For these reasons C. fasciatus should be regarded as a wild-collected display fish rather than a breeding project.