Humphead Wrasse
EN

Humphead Wrasse

Cheilinus undulatus

Declining

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Humphead_wrasse

Overview

The humphead wrasse is one of the largest reef-dwelling fishes, reaching up to 2 meters in length and over 190 kilograms, distinguished by a prominent cranial hump that develops with age, thick lips, and a color pattern shifting from greenish to blue-green with intricate facial markings in mature individuals. Also known for its longevity, with lifespans exceeding 30 years, this species is a slow-growing, late-maturing predator that feeds on hard-shelled prey such as mollusks, crustaceans, and sea urchins, including toxic species like crown-of-thorns starfish, giving it an important regulatory role in coral reef ecosystems.

It occupies coral reefs, lagoons, and channels across the Indo-Pacific, from the Red Sea and East Africa to the Pacific islands, with occasional associations with mangrove and inland freshwater habitats during early life stages. Its range spans dozens of countries, reflecting a broad but increasingly fragmented distribution.

The species is threatened primarily by targeted fishing for the live reef fish trade, where it commands high prices in luxury seafood markets, particularly in Hong Kong and mainland China. Its slow reproductive rate makes populations highly vulnerable to overexploitation. Habitat degradation from coastal development, sedimentation, and coral reef decline, exacerbated by climate-related habitat shifts, further reduces suitable range, while destructive fishing practices and reef habitat loss from logging-related runoff compound pressures.

Conservation measures include international trade regulation under CITES Appendix II, national fishing bans and size limits in some countries, marine protected areas, and captive breeding research aimed at supporting restocking efforts.

Despite these measures, enforcement remains inconsistent across its range, and illegal harvesting continues. Population trends remain downward, and without stronger compliance and habitat protection, recovery is unlikely in the near term.

The Humphead Wrasse is mainly threatened by overfishing, especially targeted capture for the live reef fish trade where it's prized in restaurants, which has drained many populations. It also suffers from coastal habitat damage—coral reefs where it lives are being altered or destroyed due to changing environmental conditions, while nearby logging activities cause sediment runoff that can degrade reef quality. Invasive species and diseases add further pressure by disrupting reef ecosystems the fish depends on. These threats are ongoing and show signs of intensifying, particularly as demand for the species in luxury seafood markets continues.

Threat summary

Habitat

Forest - Subtropical/tropical mangrove vegetation· majorMarine oceanic· majorMarine coastal/supratidal· majorWetlands (inland) - Permanent rivers/streams· majorWetlands (inland) - Permanent freshwater lakes· majorCaves and subterranean habitats· majorMarine neritic· major

Conservation measures underway

LegislationPolicies and regulationsCompliance and enforcement

Frequently asked questions

Why is Humphead Wrasse classified as Endangered?
Humphead Wrasse is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The Humphead Wrasse is mainly threatened by overfishing, especially targeted capture for the live reef fish trade where it's prized in restaurants, which has drained many populations. It also suffers from coastal habitat damage—coral reefs where it lives are being altered or destroyed due to changing environmental conditions, while nearby logging activities cause sediment runoff that can degrade reef quality. Invasive species and diseases add further pressure by disrupting reef ecosystems the fish depends on. These threats are ongoing and show signs of intensifying, particularly as demand for the species in luxury seafood markets continues.
Where does Humphead Wrasse live?
Humphead Wrasse occurs in American Samoa, Australia, China, Christmas Island, Cocos (Keeling) Islands, and Cook Islands (plus 51 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Humphead Wrasse?
The main threats to Humphead Wrasse are 11.1, 5.3, 5.4, and 8.1. The full IUCN-classified threat record for this species is detailed on the species page.

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