Chain-Lined Wrasse

Halichoeres leucurus

The Chain-lined Wrasse, also known as Halichoeres leucurus, is a small marine fish found predominantly in the Western Pacific region, including areas from the Philippines to New Guinea and as far north as the Yaeyama Islands. This species thrives in coral-rich lagoons and inner channel reefs, typically at depths ranging from 1 to 15 meters. Divers may encounter these fish either alone or in pairs as they navigate through mixed coral and algae habitats. Chain-lined Wrasses are recognized by their distinct body pattern, which changes as they mature. Males can be identified by their grey heads when viewed in natural light, along with orange spots along their scale rows. They grow up to 13 centimeters in length, making them relatively small compared to other reef fish. In terms of diet, the Chain-lined Wrasse feeds on small benthic invertebrates, such as nematodes, flatworms, and mussels. During the breeding season, they exhibit distinct pairing behavior. The conservation status of this species is listed as Least Concern by the IUCN.