Reef fish
Humphead wrasse
Cheilinus undulatus
The giant of the wrasse family, growing past 1.5m with thick lips, a bulging forehead hump and maze-like markings around the eyes. Often curious and willing to approach divers, it patrols coral reefs and drop-offs. Endangered globally and listed on CITES Appendix II, largely because of the live reef-fish trade.
- Max size
- Up to ~2.3m and 190kg
- Habitat
- Coral reefs, slopes and drop-offs
Best places to dive with Humphead wrasse
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
A territorial reef resident, present year-round on Baa's outer reefs — one Baa site is named Napoleon Reef for its resident giants.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Napoleon wrasse are resident along both passes and the drop-offs, large and curious. The IUCN lists the species as Endangered. Reliable year-round but as individuals, not schools.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Resident year-round and most reliable at Shark Reef (Ras Mohammed) and Ras Umm Sid, where individuals are used to divers and often approach closely.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Resident giants at Blue Corner.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Resident on the Ribbon Reefs (locally called Maori wrasse); commonly seen at the Cod Hole and along outer reef walls. Endangered globally, protected in the Marine Park. Not seasonal.
| Month | Likelihood |
|---|---|
| January | commonly seen |
| February | commonly seen |
| March | commonly seen |
| April | commonly seen |
| May | commonly seen |
| June | commonly seen |
| July | commonly seen |
| August | commonly seen |
| September | commonly seen |
| October | commonly seen |
| November | commonly seen |
| December | commonly seen |
Napoleon (humphead) wrasse are common on the walls here — Tubbataha holds a healthy population of this endangered species.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon wrasse are drawn to the cleaning station at Fukui Point and cruise the exposed walls; large individuals are seen but they are wary.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon wrasse are reported cruising past at Batu Bolong, Crystal Rock and German Flag through the year. Individually large and often solitary, so encounters are per-dive luck rather than seasonal — coded occasional, year-round, with no month weighting. Listed Endangered on the IUCN Red List, and Komodo's protected status is part of why they are still here.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon (humphead) wrasse are reported on the Pescador wall; encounters are hit-or-miss.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon (humphead) wrasse are regular visitors to the larger reef and boulder sites. IUCN Endangered; sightings are occasional, not guaranteed.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | not seen |
| December | occasional |
On the reef (Sipadan closed in November).
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon (humphead) wrasse are reported at Fingers and Whale Reef year-round. Single large individuals, not groups.
| Month | Likelihood |
|---|---|
| January | occasional |
| February | occasional |
| March | occasional |
| April | occasional |
| May | occasional |
| June | occasional |
| July | occasional |
| August | occasional |
| September | occasional |
| October | occasional |
| November | occasional |
| December | occasional |
Napoleon wrasse are seen on the walls and along drop-offs; large individuals are present but not on every dive.
Sources & last checked
Checked July 2026
This is a researched draft, not yet human-verified. The seasonality and logistics are drawn from the sources below — confirm specifics (permits, fees, closures) with an operator before you book.
- Humphead wrasse — Wikipedia
- Humphead Wrasse, Cheilinus undulatus — MarineBio
Note on the data: Shared species (Northern Red Sea and Baa Atoll). Commonly called Napoleon wrasse in the Red Sea.