Yellow Coris Wrasse Breeding Guide

Halichoeres chrysus is a protogynous Indo-Pacific wrasse that lives in small groups and broadcast-spawns. Its pelagic larvae make home breeding impractical.

Overview

The yellow coris wrasse (Halichoeres chrysus) inhabits the tropical and subtropical central Indo-Pacific, from Christmas Island and Indonesia through Japan, the Rowley Shoals, New South Wales, Tonga and the Solomon Islands. It is found on outer reef slopes and in rubble and sandy areas from the surface to about 30 m. Home breeding is not established; the following describes wild reproductive biology. As a benthic predator it feeds mainly on small marine invertebrates such as crustaceans, molluscs, worms and echinoderms.

Sexing

The species is a protogynous hermaphrodite: individuals start life as females and can become male later. Reliable visual sexing is not described in the available source for the smaller, female-phase fish typically sold.

Conditioning

There is no documented home conditioning protocol. The fish lives in small groups in the wild, a social structure consistent with the haremic mating typical of the family.

Spawning Behaviour & Trigger

As a member of the family Labridae, this wrasse is a broadcast spawner that releases planktonic eggs into the water column; the eggs are dispersed by currents and adults give no parental care. Within the family, juveniles are initial-phase individuals and dominant adults become terminal-phase males.

Egg & Fry Care

The eggs and resulting larvae are pelagic and drift in open water, so there is no nest or brood to tend and no practical means of rearing the planktonic larvae in a reef aquarium.

Common Challenges

Although hardy and beginner-friendly to keep, the combination of a broadcast-spawning strategy and unrearable pelagic larvae means intentional reproduction is not achievable for home aquarists.