Blackstripe Wrasse
Fishes · Bony fishes · Wrasse

Blackstripe Wrasse

Oxycheilinus arenatus (Valenciennes, 1840)
syn. Cheilinus arenatus, Cheilinus notophthalmus, Cheillio arenatus, Oxycheilinus notophthalmus
21 cmLeast Concern
926

The Blackstripe Wrasse (Oxycheilinus arenatus) is a fascinating marine species commonly found in the rich and diverse ecosystems of the 🌊 Red Sea. Characterized by their vibrant colors and distinctive markings, these fish are a part of the Labridae family. The species displays a prominent black lateral stripe running along its body, complemented by a base color that can range from shades of reddish-brown to greenish hues, which provides effective camouflage among the coral reefs and rocky substrates they call home.

Typically, Blackstripe Wrasse are medium-sized fish, reaching lengths of up to 25 centimeters (approximately 10 inches). Their bodies are elongated and robust, with a pointed snout that aids in foraging for food. As carnivorous fish, they primarily feed on smaller invertebrates, crustaceans, and occasionally small fish, using their keen eyesight and agility to capture prey.

The habitat of the Blackstripe Wrasse in the 🌊 Red Sea includes coral reefs, lagoons, and sometimes seagrass beds, where they can be seen actively swimming and foraging during the day. These fish are known for their curious and sometimes territorial behavior, often seen investigating divers and other unfamiliar entities in their environment.

Reproduction for the Blackstripe Wrasse is generally via broadcast spawning, where they release eggs and sperm into the water column for fertilization. Like many wrasse species, they exhibit protogynous hermaphroditism, where individuals can change sex from female to male if necessary to maintain social structures within their groups.

Overall, the Blackstripe Wrasse is an essential component of the 🌊 Red Sea's ecological community, contributing to the health and balance of its marine environments. Their striking appearance and intriguing behaviors make them a favorite among divers and marine enthusiasts exploring the vibrant underwater world of the 🌊 Red Sea.

Why it's threatened

There are no major threats known to this species, although it is caught in seine-nets and fish traps (Gell and Whittington 2002).

Threat classification from the IUCN Red List.

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Last Update: June 28, 2026